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Biomechanics Expert Witnesses

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4015 Watters Lane
Gibsonia PA 15044
USA
phone: 724-255-7176
fax: 484-991-1952
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Al Vangura, Jr., MS, CPS, holds an MS in Bioengineering, a BS in Exercise and Sports Science - Biomechanics, and an AS in Mechanical Engineering Technology. Mr. Vangura has over 30 years of product development experience of class I, II, and III medical devices, sports equipment, playgrounds, motor vehicles, appliances, etc. He holds multiple patents and has worked as a machinist for over 10 years.

Mr. Vangura is a seasoned, hands-on executive engineer with an extensive background and experience in the product development cycle in a variety of settings. He has led cross-functional teams developing Medical Devices for Respironics, Hill-Rom, Alung and CardiacAssist, athletic products for Reebok, Adidas, and the U.S. Olympic Biathlon team. He has also developed Military Aircraft for Sikorsky Aircraft, Boeing Defense and Space and the International Space Station for NASA.

Litigation Support - Mr. Vangura has participated in forensic engineering evaluations for over 11 years with extensive courtroom experience. He provides forensic evaluations during legal proceedings involving product-related injuries, motor vehicle crashes, and other incidents requiring independent injury evaluation and review. Mr. Vangura has been involved in over 400 biomechanics cases.

Areas of Specialization:
  • Occupant Biomechanics
  • Walking / Running Biomechanics
  • Trip / Fall Biomechanics
  • Playground Accidents and Safety
  • Sports Equipment Design / Safety
  • Machine Accidents
  • Child Abuse
  • Altercations
  • Medical Devices
  • OSHA, MSHA, FDA, and ADA
  • View Al Vangura's Consulting Profile.
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    Dr. Irving Ojalvo
    Managing Partner
    137 E. 36th Street, Suite 7K
    New York NY 10016
    USA
    phone: 800-358-9909
    fax: 888-358-9901
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    Additional Locations
    New England Offices:
    1011 High Ridge Road
    Stamford, CT 06905
    Southeast Offices:
    22808 Marbella Circle
    Boca Raton, FL 33433


    Forensic Engineering: We have a highly qualified team of Mechanical, Biomechanical, Electrical and Civil engineers, most of whom hold doctorates or other advanced engineering degrees from top universities. Our engineers have hundreds of publications, and are active in safety and accident research. Over the past decades, our engineers have helped thousands of attorneys and others pursue their cases.

    Selected Areas of Expertise:Degrees/Licenses: BS, MS, MA, PhD, ScD, PE
    Airbags are credited with reducing numerous injuries and saving many lives during vehicle accidents. However, there have been incidents where they do not function as intended, and have even caused injuries such as explosive powder burns, detached eye retinas, child suffocation and impact deaths.

    Animations are useful visual tools that can help jurors understand how an incident could, or could not, have occurred. Simply describing an event in court, or showing still pictures, may be insufficient to explain a complex sequence of events.

    Biomechanics is the application of mechanics to the interaction of biological systems with their external environment. When investigating an accident, biomechanical analysis can be used to reconstruct a victim’s motion and relate it to his injuries.

    When an understanding of complex motions associated with various accidents is required, computer simulation is an invaluable tool, which allows the modeling and visualization of rollovers and collisions. In addition to vehicle accidents, computer simulation can also be used to create many other systems of masses and contacting surfaces, such as a toppling light pole after it has been struck.

    Construction sites and equipment present many hazards if proper care is not taken. The space in and around a construction site is often filled with potentially dangerous, high-powered equipment capable of delivering high forces.

    Doors and gates, whether automated or manual, can pose a serious hazard to users if not designed, manufactured, installed and maintained properly. The different types include automatic doors, overhead garage doors, elevator doors, sliding doors, swinging doors, and automatic gates.

    Electric fires are becoming more common as appliances and electric feeds are used more and more in our daily lives. Like other fires, the root cause of an electric fire is the introduction of heat, oxygen, and fuel.

    Electric power and electronic appliances are so integrated with modern life that there is a high degree of likelihood that everyone will receive one or more electric shocks in a lifetime. In many cases, only trivial power levels are involved.

    Second only to automobile accidents, falls are the leading cause of injury and deaths. Of these, accidents due to slipping or tripping form a large proportion. Slips and trips occur on floors, streets, walkways, stairs, etc.

    Forklifts, industrial trucks, skid steer loaders, bobcats and other similar material-handling machines are often difficult to maneuver and susceptible to a wide range of accidents. Their nature exposes operators and nearby co-workers to falling loads, crushing hazards and lading dock falls.

    There are roughly 9,000 golf cart related accidents requiring emergency room treatment in the United States each year. The majority of these accidents are related to either braking, cart rollover or passenger ejection. These problems are common to golf carts due to their open design, lack of seatbelts, poor braking capabilities and the uneven terrains they are driven on.

    The primary function of all guarding is to prevent an operator or bystander from being injured by a potentially dangerous portion of a machine. Often the hazard involves moving parts with the potential to cut, crush or draw-in body parts, although barrier guards may also be necessary when electrical, thermal or chemical dangers are present.

    Human Factors and Ergonomics (HFE) is a branch of science, which is concerned with man’s interaction with his universe. Thus, it is not simply the study of pure science (e.g. sound or light), but rather man’s understanding and reactions (e.g. to hear and see).

    There are over 100,000 ladder accidents annually in the U.S. requiring hospital emergency room treatment. Although many of these result from user misuse, such as an improper extension ladder lean angle against a wall causing it to slip outward, use of a damaged ladder, or failing to lock a step ladder’s spreaders, many ladders fail due to design or manufacturing defects.

    Motorcycles, like passenger cars, are capable of high speeds and must share the road with other vehicles. However, unlike passenger cars, motorcycles are capable of rapid accelerations, offer little protection to the operator during a collision and require special skills to maneuver effectively.

    In many vehicle accident investigations, it is necessary to know not only the speeds and motions of the vehicles involved, but the causes of injuries suffered by their occupants as well. Such investigations seek to answer questions regarding occupant ejection, effects of seatbelt use, airbag deployment and body-interior impacts.

    Parking lots are the scene of many pedestrian accidents because of the close proximity of people and cars and the confusing traffic patterns that sometimes exist. In addition to pedestrian-vehicle collisions, many trip and fall accidents occur in parking lots as well.

    Though swimming pool accidents are sometimes the result of reckless participant behavior, they can also be caused by inadequate supervision, warnings, structures, or defective pool design. Structures commonly found in or near swimming pools include slides, ladders, diving surfaces and fencing.

    Approximately 125,000 serious injuries occur in the US each year related to the use of portable and fixed power saws. Lacerations and similar injuries, such as abrasions and avulsions, account for over 90% of these, which generally occur to males and result in losses in the tens of millions of dollars annually.

    An end user of a product expects that a given product will not only function as intended, but will be safe from non-obvious hazards. Based upon decades of experience with mishaps during use of common and specialized equipment, thousands of standards have been developed for many consumer products and industrial equipment. Numerous organizations exist, e.g., ANSI, ASTM, SAE, and ASME, that regularly review and update these standards.

    Places of business, residences, parking and recreational areas contain potential accident sources such as slippery floors and stairs, product displays, automatic doors, ledges, railings, elevators, escalators and other hazardous items. To prevent such items from causing injury to the public, premises owners and their agents have a responsibility to recognize unsafe conditions and exercise reasonable care to maintain or make conditions safe, or warn the public of the risks involved.

    Supermarkets, pharmacies, home improvement, and department stores expose their customers to many potential accident sources such as floors and aisles, which can become unsafe, and display merchandize that can topple or cause tripping. To prevent such accidents from occurring, these establishments should maintain routine scheduled inspections to insure that unsafe conditions are detected and corrected before accidents occur.

    In many vehicle rollover investigations, it is necessary to know not only the speeds and motions of the vehicles involved, but the causes of injuries suffered by their occupants as well. Such investigations seek to answer questions regarding occupant ejection, effects of seatbelt use, roof crush and body-interior impacts.

    Motor vehicle seatbelt use provides highly effective protection in frontal collisions for impact angles up to 30 degrees off-center (i.e. between 11 and 1 o’clock). All states have laws requiring their use for front seat passengers, as they have been shown to reduce moderate to severe injuries by 50%. They are less effective when your car is hit in the rear or side and sometimes their locking devices malfunction or the anchorage gives way.

    Recreation, sports, and gym equipment are subjected to large dynamic forces and must be designed to support these loads and protect users from unintentional hazards. Adequate instructions and warnings may be required if their assembly and proper use are not obvious.

    Codes and standards specify criteria necessary to ensure that a product, material or process will consistently and safely perform its intended function. Although standards provide minimum design requirements, conforming to a standard is not always sufficient in preventing an accident.

    Structural failure can often produce catastrophic results. In many cases, the damage seen after the accident is not indicative of the cause of the initial failure. Fortunately, based on physical evidence, an investigator can frequently determine how and why a structure failed.

    Heavy trucks, whether tractor-trailers, construction vehicles or garbage haulers, are involved in many serious traffic accidents due to their large weight, high centers of gravity, decreased visibility, poor handling and reduced braking efficiency. In addition, articulated tractor-trailers are subject to additional problems such as jack-knife and trailer sway instabilities.

    Motor vehicle accidents are the most common type of incidents producing injury in the US. The main issues in litigating automotive accidents involve vehicle speeds, seatbelt usage, airbag deployment, vehicle component failure (e.g. steering, braking), roadway design, occupant biomechanics, rollover, visibility, etc.

    A person’s interaction with his environment comes largely from visual cues. Without this information, a pedestrian can trip over an unseen object or a driver might not detect a dangerous situation. In order to avoid these hazards, a person requires adequate lighting and should be provided with appropriate illumination for a given task.

    A warning must inform individuals of a danger, which would not be obvious to them. It must tell them how to avoid the danger, and be easily understood. It should also provide them with the consequences of not heading the warning.

    A car is stopped for a light when it is unexpectedly rear-ended causing little or no damage to either vehicle. Nevertheless, the passengers of the struck vehicle complain of neck, shoulder and back pain. Insurance claim representatives, attorneys, medical, engineering and biomedical experts are then brought in and various conflicting allegations, testimony and opinions are expressed.

    Pedestrian and bicycle accidents in the United States result in approximately 80,000 and 50,000 injuries each year, respectively. Though pedestrians and bicycles move differently, they share important characteristics as both have little protection during a roadway collision with a motor vehicle.

    7/14/2009 · Human Factors
    A standard can be defined as a document issued by a recognized agency, and dealing with design and/or safety requirements relating to a specific product or type of activity. Such agencies include the U.S. Occupational Safety and Health Administration (051-IA) and the American National Standards Institute (ANSI). OSHA standards are generally legally binding for an employer, while ANSI standards are generally of an advisory nature. The term "industry standard," however, is ordinarily taken to have a broader meaning, including formal standards as just defined, and also including designs and procedures not required in formal standards, though prevailing in a specific industry, and which represent generally accepted custom and practice.

    7/14/2009 · Forensic Analysis
    Persons with no training in engineering are generally unaware of the nature of engineering analysis, and so tend to assume that testing, as a means of determining the causation of accidents, is a dominant tool of the engineer. In the following examples, we shall undertake to explain the nature of engineering analysis, and to show that it is more basic than testing because testing without analysis is meaningless. Further, while analysis is always necessary in accident reconstruction, testing is only sometimes necessary.

    There are approximately 180,000 lawnmower accidents per year. In this introductory presentation, we undertake to describe the various ways in which these accidents occur.

    7/14/2009 · Forensic Analysis
    Second to automobile accidents, accidents due to falls are the leading cause of injury and death. Of these, accidents due to slipping (not tripping) form a large proportion. Slipping may occur on floors, walkways, and stairs or steps. For Introductory purposes, however, the present discussion will be limited to slipping on flat surfaces such as a floor or sidewalk.

    7/14/2009 · Human Factors
    When a person becomes aware of a dangerous situation, a time-interval must elapse before he can take defensive action against it. This time interval, commonly called the reaction time, has been found to be about 0.7 second for all normal persons, regardless of their background and training. This suggests that the reaction time depends on some basic aspect of the human physiology-involving the brain, nervous system, and muscles-which does not vary much from person to person.

    A car is stopped for a light when it is unexpectedly rear-ended by a vehicle from behind. It is not a hard impact and there is little or no damage to either vehicle, because the energy absorbing bumpers have protected them. Nevertheless, the passengers of the struck vehicle complain of neck, shoulder and back pain. The next day they allegedly experience even greater pain and visit a medical person who claims that they have been injured. Insurance claim representatives, attorneys, medical, engineering and biomedical experts are then brought in and various conflicting allegations, testimony and opinions are expressed. Do we have a legitimate injury claim on our hands or a situation of fraud?

    7/14/2009 · Forensic Analysis
    Accident reconstructionists are often called on to determine the distance that a car, covers while being braked to a stop. Conversely, the reconstructionist may be given information as to the length of the skidmarks left by a car on the roadway, and may be asked to determine how fast the car must have been going at the beginning of the skid. An expert can accomplish this with considerable accuracy, based on a knowledge of the physical principles that are involved, plus available information relating to the friction of tires on various types of road surfaces.

    7/14/2009 · Forensic Analysis
    According to the Consumer Products Safety Commission (CPSC), there are approximately 10,000 golf car related injuries requiring emergency room treatment in the US each year. One significant mode of injury in golf car accidents is passenger ejection, which can lead to serious injuries, especially of the head. Based on CPSC statistics, roughly 35% of golf car accidents involve a person falling out of the car. In addition to ejection accidents, at least 10% of golf car accidents involve a rollover and statistics indicate that such accidents are roughly twice as likely to lead to injuries requiring a hospital stay as non-rollover accidents.

    7/14/2009 · Forensic Analysis
    According to Consumer Product Safety Commission (CPSC) accident estimates, tens of thousands of stepladder accidents requiring emergency room treatment occurred annually in the United States. Approximately 85-90% of these accidents involve the user falling from the ladder and 8-9% of these injuries are serious enough to require that the victim be admitted to a hospital. In addition to posing a severe health concern, these accidents have significant loss-of-wages and high medical expense implications.

    11/30/2005 · Expert Witnessing
    Participation of the proper automotive expert in a personal injury lawsuit can govern its success. This article develops four basic principles to optimize their use, while minimizing their cost, and describes some important techniques used by the accident reconstructionist

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    Daniel Rapperport
    8 Wallis Court
    Lexington MA 02421
    USA
    phone: 781-862-9001 or 339-222-2822
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    Rapperport Associates, Inc., provides exceptional capability in Failure Analysis, Fire and Explosion Investigation, Accident Reconstruction, Structural Analysis, Mechanical and Electrical Engineering, Metallurgy and Materials Science.

    We have provided superior technical support for litigation since 1974, and possess an extraordinarily talented technical team with impeccable academic and industrial credentials and proven analysis capability. Our team of distinguished scientists and engineers is drawn principally from Massachusetts Institute of Technology (M.I.T.) and Stanford University.

    AREAS OF EXPERTISE:

    Failure Analysis
  • Structural Design Analysis
  • Metallurgical Failures
  • Finite Element Stress Analysis
  • Fracture and Fatigue Analysis
  • Scanning Electron Microscopy
  • Corrosion

  • Accident Reconstruction
  • Automobiles / Trucks
  • Biomechanics / Injury Mechanism
  • Off-Road Vehicles
  • Occupant Motion
  • Aircraft
  • Animation

  • Fire & Explosion Analysis
  • Cause and Origin
  • Electrical
  • Gases, Liquids and Dust
  • Industrial Processes
  • ........Safety
  • Machine and Industrial Safety
  • Machine Guarding
  • Construction Failures
  • Slips, Trips, Falls


  • Engineering
  • Mechanical
  • Structural / Civil
  • Metallurgy
  • Materials Science
  • Aeronautics and Astronautics
  • Electrical
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    Dr. J.P Purswell, PhD, PE, CPE
    Ergonomics & Safety Expert
    2035 Mulligan Drive
    Colorado Springs CO 80920
    USA
    phone: 719-330-0126
    fax: 719-265-6905
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    Dr. J. P. Purswell, PhD, PE, CPE has extensive experience in Human Factors, Ergonomics and Safety Engineering. He holds a doctorate in Industrial & Systems Engineering from Virginia Tech. A member of the Human Factors and Ergonomics Society and the American Industrial Hygiene Association, Dr. Purswell served as the past Chair of the Industrial Engineers PE exam from 2005 to 2009. He continues to serve on the committee which is responsible for the preparation of the national professional engineering examination in industrial engineering.

    Dr. Purswell is the author of more than 20 publications and presentations on Product Safety, Occupational Safety, Printed Warnings, and Auditory Warnings. Examples of products addressed include silica, asbestos, cleaning chemicals, gasoline containers, and recreational equipment. Dr. Purswell maintains NIST-calibrated equipment for the measurement of light, sound, force, and whole-body and hand-arm vibration in addition to standard photo and video equipment.

    Dr. Purswell has been an Expert Witness in the legal industry since 1997. He has been qualified as an expert in state and federal courts across the nation in safety engineering, including safety analysis techniques such as Fault Tree Analysis and FMEA as well as product warnings / instructions and OSHA compliance issues. Dr. Purswell's services include site inspections, document review, drafting Rule 26-compliant reports, deposition, and trial testimony. He has been retained by attorneys for both Plaintiff (40%) and Defense (60%) more than 100 times, has been deposed approximately 50 times, and has testified at trial over 20 times.

    Areas of Expertise:
    • Warning and Safety Instructions
    • OSHA Compliance
    • Chemical Accident Prevention
    • Product Safety
    • Lockout / Tagout & Machine Guarding
    • Trucks and Forklift Accidents
  • Power Tools Safety
  • Hazard Communication - Audible Alarms
  • Employer Safety Training and Supervision
  • Perception / Reaction Time
  • Ergonomic Work Practices
  • Working and Walking Surfaces - Slip, Trip and Fall
  • View Dr. Purswell's Consulting Profile.
    10/10/2013 · Ergonomics
    In 2005 a summary of "General Duty Clause" citations issued for ergonomic hazards was published (Purswell & Purswell, 2005). That summary showed that the primary area of ergonomics citation activity under the "General Duty Clause" (paragraph (5)(a)(1) of the OSHAct of 1970) by OSHA to that point had been concentrated in nursing homes, peaking in 2002 and 2003.

    The purpose of the current study was to update and expand upon an earlier study performed to review and categorize OSHA accident investigation records for pedestrian-backing vehicle accidents according to whether the backing vehicle had a backup alarm and whether the alarm was installed and functioning as intended. The current study includes an analysis of additional records as well as the business type (SIC code) of the employer.

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    T. Kim Parnell, PhD, PE
    Principal
    1150 Kelsey Dr.
    Sunnyvale CA 94087
    USA
    phone: 408-203-9443
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    Medical Devices, Biotech, Failure Analysis, Mechanical Eng, Materials, Reliability, Expert Witness

    Kim Parnell Mechanical Engineer Expert PhotoT. Kim Parnell, PhD, PE is a Professional Mechanical Engineering consultant with strong experience in a number of technology areas. He holds PhD and MSME degrees from Stanford University in Mechanical Engineering and a BES from Georgia Tech. He specializes in the mechanical engineering design and behavior of Biomedical Devices, Superelastic and Shape Memory Metals (Nitinol), Bioabsorbable Polymers, Composites, Fiber-Reinforced Materials, Electronics, and Consumer Products. Dr. Parnell consults actively in these areas using finite element analysis and other advanced technologies to improve designs, to perform failure analysis, and to improve reliability.

    Dr. Parnell served on the Mechanical Engineering faculty at Santa Clara University from 2010-2012 and was previously a Visiting Associate Professor at Stanford University. He lectured in the Stanford Composites Design Program, and is a coach and mentor for the innovative Stanford Biodesign Program. He has worked for companies including MSC Software, Rubicor Medical, Exponent Failure Analysis Associates, SST Systems, ATT Bell Laboratories, Stanford University, and General Motors.

    Dr. Kim Parnell has experience as a medical device patent litigation expert, as an expert in product liability matters (including heavy truck crashworthiness), and frequently serves as an expert witness and litigation consultant. He has testified in both trial and deposition, and has also authored expert reports. Dr. Parnell's litigation support services are available to attorneys for both plaintiff and defense.

    Areas of Expertise:
    • Patents and Intellectual Property
    • Medical Devices
    • Medical Instrumentation
    • Composite Materials
    • Finite Element Analysis (FEA) & Simulation
    • Cell Phones, Personal Electronic Devices
    • Gas Leaks, Pipe Failure, Vapor Cloud Explosions
  • Shape Memory Materials
  • Heavy Truck Crashworthiness
  • Consumer Products
  • Product Design Refinement
  • Piping, Pressure Vessels
  • Failure Analysis
  • Reliability
  • Selected Professional Memberships:
    • Registered Professional Engineer (Mechanical), California
    • ASME (American Society of Mechanical Engineers), Fellow
    • SAE (Society of Automotive Engineers), Member
    • IEEE (Institute of Electrical & Electronics Engineers), Senior Member
    • ASM International, Member
    • SMST (Shape Memory and Superelastic Technologies), Member
    View Dr. Parnell's Consulting Profile.
    Rail residual stress distributions can be complex and variable in nature, as different manufacturing techniques produce varying stress magnitudes and distributions. To evaluate the effect of residual stresses on rail integrity, an analysis technique was sought that could quantify the effect of these stresses on web crack propagation.

    The computer program LS-DYNA3D was used to simulate the behavior of a specific, though representative, heavy truck cab-over tractor-trailer vehicle during a full 180° rollover event. These simulations provide a key component in the development of a physical testing procedure for evaluating structural integrity and occupant crash protection system designs in heavy trucks.

    2/18/2014 · Medical
    The United States Food & Drug Administration (FDA) requirements for Class III implantable medical devices requires a 10 year life, or approximately 400 million cycles of service.

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    George Pappas, MD, PhD
    9100 Medcom Street
    N. Charleston SC 29406
    USA
    phone: 617-513-8572
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    George Pappas, MD, PhD, is fellowship trained in Orthopaedic Sports Medicine (Stanford University) and Trauma Surgery (Santa Clara Valley Medical Center).

    As a former MIT and NASA trained aerospace engineer with a doctorate in biomechanics from Stanford, Dr. Pappas has a strong background in engineering and product design. His engineering background is particularly useful in the analysis of injury mechanisms and causation, surgical technique, and medical device product design. He currently serves as a team physician for professional baseball and hockey teams and teaches medical students and residents from the Medical University of South Carolina (MUSC).

    Dr. Pappas has published in the fields of applied physiology, biomechanics, radiology, shoulder surgery, and sports medicine and has authored book chapters in aeronautical engineering, biomechanics, and orthopaedic surgery.

    Litigation Support - Dr. Pappas provides expert witness services for counsel representing Plaintiff and defense. His cases include issues of Injury Mechanism and Causation. Dr. Pappas is available for consultation, medical record review, deposition, and trial testimony.

    Areas of Expertise:
    • Arthroscopic Surgery
    • Hip Arthroscopy
    • Shoulder, Hip, Knee Injuries
    • Rotator Cuff Injury and Repair
    • Hip and Shoulder Labral Tears
    • Orthopaedic Trauma
  • Injury Mechanism
  • Sports Injuries
  • Slip, Trip and Fall
  • Biomechanics
  • Orthopaedic Surgical Technique
  • Medical Product Design Failure
  • View Dr. Pappas' Consulting Profile.
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    David G. Curry, PhD, CHFP, CSP
    420 N. Main Street
    Montgomery IL 60538
    USA
    phone: 630-740-6871
    fax: 630-701-7732
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    David G. Curry, PhD, CHFP, CSP, consults on all aspects of Human Factors, Applied Human Performance, Ergonomics, and Safety. He has over 30 years of experience working in accident investigation, product design and development, operational testing and analysis, and both laboratory and field research in the control / display, aviation, and surface vehicle arenas.

    Dr. Curry holds graduate degrees in Experimental, Human Factors, and Cognitive/ Perceptual Psychology, Industrial Engineering, and Business. He retired as a Lieutenant Colonel from the Air Force Reserve, where he worked with the Air Force Research Laboratory in the area of display technologies, aircrew training, and pilot-vehicle interfaces.

    Litigation Support - Dr. Curry is recognized as an expert in operator-vehicle interaction, and is both a Certified Human Factors Professional and Certified Safety Professional. He holds several patents and has or does serve as a member of national standards-making committees for a variety of organizations (e.g., ANSI, ASTM, and SAE.) Dr. Curry has provided expert testimony in both State and Federal courts.

    Areas of Particular Expertise:
    • Human / Machine Interface Design and Evaluation
    • Human Capabilities and Limitations in Applied Environments
    • Industrial Ergonomics
    • Instructions and Warnings
    • Perception / Vision / Visibility
    • Slips / Trips / Falls
    • Evaluation of Equipment / Facilities / Structures from a Human Use Standpoint
    • Safety-related Issues in General
    View Dr. Curry's Consulting Profile.
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    Dr. John D. Jarrell, PhD, PE
    President
    315 Commerce Park Road
    North Kingstown RI 02852
    USA
    phone: 800-672-6721 or (401) 290-8823
    fax: (401) 667-0993
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    Materials Science Associates, LLC provides Expert Witness services for complex Materials, Mechanical, and Biological Systems legal cases. The engineers and scientists at Materials Science provide honest and accurate analysis of alleged Product Failures, Personal Injuries, and Manufacturing Processes. Experts in Biomedical Engineering, Forensics, and Pathology the Experts at Materials Science can assist with retrieval and storage of devices. Materials Science Associates specializes in Multi District Litigation (MDL), Class Action, and Consolidating cases. Materials Science Associates LLC provides the following services to legal teams worldwide:
    • Implant Retrieval
    • Products Liability
    • Medical Devices
    • Evidence Storage
    • Orthopaedic Implants
  • Surgical Devices
  • Transdermal & Fentanyl Patches
  • Controlled Delivery Devices
  • Manufacturing Support
  • Process Review
  • John JarrellDr. John D. Jarrell, PhD, PE, is an experienced multi-discipline engineer specializing in the analysis of complex designs and failures involving materials, mechanical and biological systems. He has been a licensed Professional Mechanical Engineer, since 1996 and actively involved in Engineering Analysis, Design, Product Development, and Research. He earned three degrees from Brown University, a Bachelors and Masters of Science in Materials Science and Engineering and a Doctorate in Biology, Medical Science and Engineering and received Medical training in histology, physiology, microbiology and pathology.

    Dr. Jarrell has a faculty appointment in the Department of Orthopaedics at the Alpert Medical School of Brown University. He has several US and foreign patents issued or pending covering Photoactive Materials, Active Delivery Films and Coatings for Green Energy and Medical Applications.

    Jay VincelliJay M. Vincelli, M.Sc, PE, is an experienced multi-discipline engineer specializing in Computational Analysis of Biomechanical Implants and Aviation Components, Fracture Analysis, and Chemical and Metallurgical Analysis of steel, aluminum, titanium, and nickel-based alloys. With expertise in Medical Device Retrieval, Wear Analysis, and Aviation Failure Analysis, he is actively involved in engineering analysis, design, product development and research.

    Mr. Vincelli has filed for a provisional patent covering a miniaturized cardiopulmonary bypass circuit for transgenic mouse testing. He is the author of a peer reviewed publication on a study of laser cleaning and pulsed gas tungsten arc welding of titanium alloy tubes. His collaborative work has been published with investigators at the University of Virginia Department of Electrical and Computer Engineering and the U.S. Naval Air Warfare Center in Cherry Point, NC.

    Donald MongDonald L. Mong, PI, is a highly experienced Traffic Accident Reconstructionist, Private Investigator, Forensic Photographer, and Certified Master Diving Instructor. He is a 22 year Veteran Police Officer with 15 years of experience as a Traffic Officer. He has investigated over 2,000 traffic accidents, including many fatalities and serious injuries involving automobiles, buses, motorcycles, bicycles and pedestrians. He spent 10 years as a Rhode Island Municipal Police Academy Traffic Accident Investigation and Reconstruction Instructor.

    Mr. Mong has been qualified and testified as an expert witness in Rhode Island Superior Court and Vermont District Court for cases involving Motor Vehicles, Bicycles, Pedestrians, and Motorcycles. He has assisted multiple jurisdictions with investigations involving fatalities, serious injuries and police collisions. Donald L. Mong has conducted extensive hands-on research and training in traffic accident reconstruction, including conducting over 20 low, medium and high speed crash tests.

    View Materials Science Associates' Consulting Profile.
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    Nancy M. Major, MD
    1260 Norwood Avenue
    Boulder CO 80304
    USA
    phone: 267-254-5412
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    Nancy M. Major, MD, has been a board certified, fellowship trained Musculoskeletal Radiologist for 20 years, having spent nearly all in an academic position. Dr. Major's area of research interest is musculoskeletal imaging with a concentration in sports related injuries, musculoskeletal tumors, and biomechanics associated with injuries.

    Dr. Major completed radiology residency at UCSF and musculoskeletal (MSK) fellowship training at Duke University where she remained on faculty for 13 years. While there, she taught residents, fellows, med students and an undergraduate class (Radiology of Sports Injuries). Dr. Major then moved on to the University of Pennsylvania to become the chief of MSK radiology. After a couple of years, she chose to look more at the business side of practice and worked with a 25 person orthopedic specialty group in Allentown, PA as their radiologist.

    Dr. Nancy Major at RSNA


    Litigation Support - Dr. Major has provided expert witness services for approximately 13 years in cases involving X-rays, Orthopedic Surgeons, and Radiologists. Her services are available to counsel for both Plaintiff and Defense. Dr. Major is a well-published author and has had experience with numerous depositions and court appearances. She has been deposed over 100 times and testified over a dozen times.

    View Dr. Major's Consulting Profile.
    Nancy M. Major, MD, et al
    In this book, the authors present Netter's beautiful and instructive paintings and illustrated cross sections created in the Netter style side-by-side with high-quality patient MR images created with commonly used pulse sequences to help you visualize the anatomy section by section. With in-depth coverage and concise descriptive text for at-a-glance information and access to correlated images online, this atlas is a comprehensive reference that's ideal for today's busy imaging specialists.
    Nancy M. Major, MD, et al
    Whether you are a resident, practicing radiologist, or new fellow, this authoritative resource offers expert guidance on all the essential information you need to approach musculoskeletal MRI and recognize abnormalities. The updated second edition features new illustrations to include the latest protocols as well as images obtained with 3 Tesla (T) MRI.
    Nancy M. Major, MD, et al
    This lavishly illustrated book is a perfect introduction to the exciting field of radiology. A lively, easy-to-read writing style explores the diagnostic imaging issues associated with each body region. Extensive tables, color-coded key points, and detailed drawings make finding essential information a snap. Case studies and high- resolution images demonstrate radiologic principles and characteristic findings for a wide range of disease entities.
    Nancy M. Major, MD, et al
    A favorite of radiology residents and practitioners alike, this book makes it remarkably simple to learn how to perform and interpret CT scans. The completely revised and updated 3rd Edition covers the most recent advances in CT technique, including the use of multislice CT to diagnose chest, abdominal, and musculoskeletal abnormalities, as well as the expanded role of 3D CT and CT angiography in clinical practice.
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    David Kassekert
    P.E.
    4017 Washington Road #344
    McMurray (Pittsburgh) PA
    USA
    phone: 866-344-7606
    Keystone Logo

    Keystone Engineering Consultants, Inc. is a multi-discipline, broad-spectrum firm providing comprehensive and qualified forensic engineering, architecture, scientific, and fire/arson investigation expert services to the legal community, insurance industry, and the public and private sectors.

    A professional evaluation by any of our 40+ professionals and consultants can help solve problems in a cost-effective way. We listen to the needs of our clients and offer unbiased, ethical, and professional opinions backed by education, experience and scientific testing.

    We are available for consultation and review of the factual information involved with a case to determine the worthiness of the matter prior to committing to a full investigation.

    Areas of Expertise / Practice Include: Accident Reconstruction; A/E Professional Liability; Amusement Park Rides; Aviation Issues; Biomechanics; Blasting, Quarry and Construction Explosions; Building Condition Assessments; Chemical, Civil, and Electrical Engineering; Geotechnical, Industrial, and Mechanical Engineering; Structural Engineering; Commercial Claims; Construction Accidents/Disputes/Failures; Electrical Systems and Controls, Electrocutions and Shocks; Elevators & Escalators; Environmental Issues; Fire, Explosion and Arson Investigations; Fire Prevention; Forensic Architecture; Hazardous Materials; Health and Safety Issues; Heating, Ventilation and Air Conditioning; Human Factors; Indoor Air Quality and Mold Investigations; Industrial Safety, Ladders and Scaffolds; Machine Guarding and Safety; Material Failure Analysis; Motor Vehicle Crashes; Non-Destructive Testing; Playgrounds, Parks, Health Clubs and Recreational Facilities; Personal Injury; Premises Liability; Product Liability; Property Damage; Roadway Design Issues; Slips, Trips and Falls; Subrogation; and Toxicology.

    Offices serving Pennsylvania, Ohio, West Virginia, New Jersey, Delaware
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    James M. Miller, PE, PhD
    Founder
    2392 Fuller Court
    Ann Arbor MI 48105
    USA
    phone: 734-662-6822
    fax: 734-747-9712
    Miller-Engineering-Logo.jpg
    The experts at Miller Engineering are Ann Arbor based professional engineers celebrating 30 years of service to University, Government, Insurance, and Industry through research, publications, presentations, and testimony. Miller Engineering has a staff of engineers and experts in the Mechanical, Chemical, Agriculture, Industrial, and Human Factors fields of engineering with specific knowledge in the following areas:

    Vehicles
    • Car/Truck Accident Reconstruction
    • Crash Data Retrieval (CDR)
    • Visibility & Reaction Time Analysis
    • Tires, Trailers, Brakes & Accelerators
    • Truck/Off Road Vehicle Egress/Ingress
    • Traffic Signing and Construction Zones
    Mechanical & Electrical Safety
    • Product Safety & Analysis
    • Machinery - Metal, Wood, Plastic Molding
    • Machine Guarding & Safety, Robots, Automation
    • Hazard and Risk Analysis
    • Employee Safety Procedures – OSHA
    • Electrical Distribution & Transmission Hazards
    Warnings & Instructions
    • Warning Labels & User Manual Design
    • Hazard Analysis & Product Label Designs
    • Medical Device & Drug Warnings & Instructions
    • Inadequate Warnings Analysis
    • Standard Compliance (ANSI Z535)
    • Product Recall Information & Strategies
    Chemicals Safety & Labeling
    • NEW OSHA HAZCOM (2012) & GHS Review
    • MSDS, SDS and Product Label Compliance
    • Toxic Torts - Diacetyl, Asbestos, Benzene, Lead, Carbon Monoxide
    Chemical Exposures & Workplace Safety
    • Chemical Inhalation, Ingestion, Dermal Contact
    • Contamination - Water & Environmental
    • Manufacturing & Process Line Accidents
    • Slips, Trips, Falls, & Entanglements
    Fires & Explosions
    • Cause & Origin Investigations
    • Gas, Vapor, & Electrical
    Agriculture
    • Tractor & Equipment Accidents
    • Chemical Applications & Exposures
    • Crop Storage & Harvesting Accidents
    • Pesticides
    Construction
    • Vehicle Visibility Accidents
    • Slip, Trip, & Fall Accidents
    • Power Tool Repetitive & Immediate Injuries
    • Scaffolding - Cranes - Hoisting - Fork Lifts
    Consumers/Household Safety
    • Appliances & Tools
    • Child Furniture, Choking, Playgrounds
    • Swimming Pools & Exercise Equipment
    • Recreation - ATV, Boats, Bicycles, Boards
    • Ladder, Stair, Step and Railing Accidents
    • Slip, Trip, & Fall Accidents
    Insurance Subrogation & Forensics
    • Accident Investigations
    • Electrical & Fire Causation
    • Chemical Leakage Damage
    • Defective Equipment Injuries
    • Premise and Process Damages
    James Miller Mechanical Engineering Expert PhotoJames M. Miller, PE, PhD – Founder

    Dr. Miller is an Emeritus Engineering Professor at the University of Michigan and a registered professional engineer and consultant with over 30 years of experience as an engineering expert witness. He specializes in warnings, labeling and instruction manuals, consumer product design, machine guarding, process safety, fire science, vehicle visibility, tractor egress/ingress, pedestrian and worker slip and fall prevention, COF testing, recreational vehicle safety (boats, ATVs and personal watercraft), compliance with occupational safety and consumer safety standards (OSHA, MSDS, ANSI, ASTM, UL, CPSC).


    Mark Lehto Engineering Expert PhotoMark R. Lehto, PhD – Co-Founder

    Dr. Lehto is a Professor of Engineering at Purdue University. He specializes in knowledge engineering, warnings and instructions, structuring expert systems, accident modeling, accident statistical analysis, consumer product safety, boating safety, in-field national surveys of product usage and product information effectiveness.






    Bradley Cook Mechanical Engineering Expert PhotoBradley T. Cook, PE – Managing Engineer

    Bradley is a registered professional engineer and consultant with extensive experience in accident reconstruction. He specializes in vehicular accident reconstruction and has investigated hundreds of vehicle accidents involving cars, trucks, pedestrians, bicyclists, motorcycles, etc. Bradley also has experience in product safety and hazard analysis; occupational safety and health (OSHA) compliance; pedestrian and worker slip and fall prevention; investigation and reconstruction of industrial and consumer product accidents. He holds a Bachelor of Science in Mechanical Engineering from the University of Michigan and a Masters of Science in Engineering with a Biomedical concentration from Purdue University.
    Mark R. Lehto & Steven J. Landry
    Introduction to Human Factors and Ergonomics for Engineers, Second Edition presents and integrates important methods and tools used in the fields of Industrial Engineering, Human Factors and Ergonomics to design and improve jobs, tasks and products. It presents these topics with a practical, applied orientation suitable for engineering undergraduate students.
    Mark R. Lehto, Steven J. Landry & Jim Buck
    Emphasizing customer oriented design and operation, Introduction to Human Factors and Ergonomics for Engineers explores the behavioral, physical, and mathematical foundations of the discipline and how to apply them to improve the human, societal, and economic well being of systems and organizations.
    Mark R. Lehto & James M. Miller
    James M. Miller, Mark R. Lehto & J. Paul Frantz
    James M. Miller, Mark R. Lehto
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    Dr. Kenneth A. Solomon
    Chief Forensic Scientist, Technical Director
    5324 Canoga Ave.
    Woodland Hills CA 91364
    USA
    phone: 818-348-1133
    fax: 818-348-4484
    Areas of Expertise:
  • Accident Reconstruction
  • Biomechanics
  • Human Factors
  • Safety
  • Accident Prevention
  • Adequacy of Warnings
  • Building Codes
  • Coefficient of Friction
  • Construction Defect
  • 3D Scans
  • Failure Analysis
  • Industrial / Recreational / Structural
  • OSHA Compliance
  • Premises Liability
  • Product Integrity / Testing
  • Computer Animation and stimulations
  • Defense and Plaintiff Cases
  • Civil & Criminal
  • Educational Seminars
  • Litigation and Non-litigation
  • Mediation / Arbitration Services
  • Court Testimony over 2000 x's


  • Auto • Airbag • Bicycle • Boating • Bus • Chair Design / Safety / Failure • Diving and Drowning • Electrocution and Shock • Elevator • Escalator • Fires and Explosions • Forklift • Gate • Golf Cart • Highway Design and Safety • Ladder • Law Enforcement • Lighting & Illumination • Loading Dock • Metallurgy • Motorcycle • Paintgun • Playground Safety • Press • Ramps • Rollercoaster • Safety Guards • Scaffolding • Seatbelts • Slip / Trip and Fall • Spas • Stairs • Swimming Pool Design and Safety • Tractors • Trailers • Trucks • 3D Scans
    3/26/2014 · Warnings & Labels
    In essence, to warn is to place someone on advance notice of a danger or a potential danger. To warn requires that the person or people giving the warning have a superior knowledge of the harm or potential harm compared to the person or people exposed. Further, the person or the people who are warning must also have a superior knowledge of the means of reducing either the likelihood and/or the magnitude of the harm or potential harm as compared with the person or people exposed.

    Air bag control modules utilize complex algorithms to make air bag deployment decisions based on crash severity related to the change in vehicle speed or deceleration over time. Due to the proprietary nature of air bag deployment algorithms, the velocity, acceleration, or displacement thresholds for air bag deployment during a collision are not easily obtained; however, a range of frontal barrier impact speeds and corresponding deceleration and displacement threshold values for air bag deployment can be approximated using known vehicle stiffness-to-weight ratios.

    6/28/2013 · Medical
    The purpose of this article is to show the relationship between the mechanism of an ankle injury (inversion, eversion, etc.) and the most likely result of the injury (sprain, fracture, etc.).

    5/22/2006 · Injury
    The purpose of this article is to distinguish the mechanism of knee injury (e.g., forward fall while foot is trapped, impact of knee on dashboard, chronic injury due to repetitive twisting, etc.) from the type of injury (e.g., torn meniscus, ruptured ACL, bursitis, etc

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    Dr. Kevin A. Rider, PhD, PE, CPE
    Owner
    100 E. Campus View Blvd, Suite 250
    Columbus OH 43235
    USA
    phone: 734-864-2973
    kevin-rider-photo.jpg
    Dr. Kevin A. Rider, PhD, PE, CPE of Forensic Human Factors, LLC., providing investigations and expert testimony regarding predictable human behavior, particularly as it relates to motor vehicle and pedestrian collisions, the design and use of products, adequacy of warnings/instructions, premises liability, and slips, trips and falls. His work focuses on identifying the Human Factors Elements that lead to unfortunate incidents, and what should have been done to prevent them.

    Dr. Rider is a Licensed Engineer and Certified Professional Ergonomist, and has over 13 years of experience studying human movements and behavior using human motion capture and digital human modeling (JACK). He has served as a human factors and ergonomics consultant since 1999 which includes five years teaching industrial engineering and occupational safety courses at West Virginia University. He has presented at professional conferences, both nationally and abroad, and his research is published and cited in a number of peer-reviewed journals. He continues to serve as a reviewer for conference and journal manuscripts.

    Dr. Rider has been retained as an Expert over 100 times, and excels at deposition and trial testimony. His services are available to attorneys for both Plaintiff and Defense. He is best utilized by personal injury attorneys who understand the value added to their case by expert human factors testimony in cases, particularly where comparative fault is a concern. He specializes in explaining why hazards are NOT open and obvious, and how products and premises must be designed reduce injuries that result from foreseeable human behavior.

    Areas of Expertise:
    • Driver Behavior - Cell Phone Use and other In-Vehicle Distractions
    • Product Liability - Design, Guards, Warnings, Adequacy of Instructions
    • Premises Liability - Sidewalks, Shopping Centers, Community Parks, Retail Displays
    • Slips, Trips, and Falls
    • Visibility and Lighting - Illumination and Conspicuity of Objects
    • Workplace Safety - Defective Products, Gross Negligence or Misconduct, Third Party Actions on Worksites
    • Machine Guarding - Lock-out-tag-out (LOTO)
    .
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    Christopher Gayner
    CEO /Senior Engineer
    5482 Wilshire Blvd.,Suite 1592
    Los Angeles CA 90036
    USA
    phone: 888-687-1334
    Christopher Gayner is the CEO of Expert Reconstruction Company and has 30 years of professional experience with over 1000 Traffic Accident cases involving Automobiles, Trucks, Buses, Trains, Motorcycles, Bicycles and Pedestrians. Mr. Gayner has testified over 300 times in trials, depositions, mediations and arbitrations. He is ACTAR certified and a Member of the Society of Accident Reconstructionists and the Society of Automotive Engineers.

    Areas of Specialization:
    • Accident Reconstruction (Manual and Computer-Aided)
    • Human Factors
    • Occupant Dynamics
    • Bio-Mechanics
    • Restraint Systems (Seat Belts & Air Bags)
    • Product Defects
    • Crashworthiness
    • Vehicle & Scene Inspections
    • Accident Scene and Vehicle Crush Damage Assessment
    • Crash Data Retrieval
    • Photographic Documentation and Interpretation
    • Expert Witness Testimony
    • Neutral Expert Mediation Services
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    Ernest Chiodo
    M.D., J.D., M.P.H., M.S., C.I.H.
    221 North LaSalle,Suite 1748
    Chicago IL 60601
    USA
    phone: 312-351-0717
    Ernest P. Chiodo, M.D., J.D., M.P.H., M.S., C.I.H. is a physician, attorney, Certified Industrial Hygienist (C.I.H), and biomedical engineer. Dr. Chiodo is board certified in the specialties of Internal Medicine, Occupational and Environmental Medicine, and Public Health and General Preventive Medicine. Dr. Chiodo served as the Medical Director of the City of Detroit and was the chief physician in charge of measures designed to protect the public health of over one million persons. He has also been the lead expert witness in a number of high profile cases including serving as the lead expert witness in a mass toxic tort case for Gerry Spence.

    Areas of Expertise:
  • Toxicology
  • Epidemiology
  • Industrial Hygiene
  • Mold
  • Asbestos
  • Benzene
  • Biomedical Engineering
  • Accident Reconstruction
  • Electrocution
  • Building Related Disease
  • Biomechanics
  • Bed Bugs
  • Genetic evidence in the form of DNA profiles has proven to be a powerful tool in the advance of justice by proving the innocence of accused persons.

    Low speed motor vehicle collisions are a common occurrence. The use of cellular phones, text messaging, and e-mailing while driving has only increased the frequency of low speed motor vehicle collisions. A motor vehicle collision where there is only minor damage to the vehicles may result in personal injury claims for substantial sums.

    10/11/2012 · Toxicogenomics
    In toxic tort litigation, a person is often claiming to have developed cancer or some other serious disease due to having been exposed to a particular substance. Determining if the exposure to the substance was the cause of the disease is often a central focus of the litigation.

    9/26/2012 · Medical
    It is a common error that an attorney retains the wrong type of expert to testify in a lawsuit. This error is particularly common when the expert is a medical specialist. It is widely believed that a medical doctor who specializes in a particular organ system is qualified to formulate opinions and testify as to all issues concerning that organ system.

    Ernest Chiodo, MD, JD, MPH, CIH
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