Mari S Truman, MS, PE Expert Witness

Contact this Expert Witness

  • Company: OrthoBioMech LLC
  • Phone: 574 265 1726
  • Cell: 574 265 1726
  • Fax: 866 470 6125
  • Website:

Specialties & Experience of this Expert Witness

General Specialties:

Biomechanics and Medical Devices

Keywords/Search Terms:

Occupant Motion, Injury Biomechanics, Orthopedics, Medical Product Liability, Duties of Manufacturer, Design, Testing, Manufacturing, Warnings, Instructions for Use, Injury Event Reconstruction, Failure Analysis, Injury Pattern, Soft Tissue Injury, Low Speed Collisions, Falls, Impacts, Sports


BSE Biomedical Engineering, The Catholic University of America; ME Mechanical Engineering, University of Illinois

Years in Practice:


Number of Times Deposed/Testified in Last 4 Yrs:


Additional Information

Licensed Professional Engineer Medical Device Design & Development  38+ years orthopaedic device development  12 patents Testified in State and Federal Courts , Injury Biomechanics and Medical Device Litigation  20+ trials  100+ depositions 38 years of experience in the biomechanics and orthopedics fields, 16 years forensic case analyses. I routinely deal with forces that are applied to the human body during many activities, including impact and injury scenarios. To assure the safety and efficacy of new medical devices, we define clinically relevant performance requirements for their installation and use, and then test to define the product specific performance characteristics. The physical principles and methods used in orthopedic biomechanics are the same as those used to reconstruct injury events. I am familiar with forces and loads applied to the hips, knees, wrist, shoulder, head, neck, lower back and skeleton in many typical activities, including sitting, walking, jumping, running climbing, standing, falling, sport and recreational activities and vehicular collisions. Among others, I am a member of, among others, the American College of Sports Medicine, the American Society of Mechanical Engineers, the International Society of Biomechanics, the Orthopedic Research Society, North American Spine Society, and ASTM International. Product development and design experience in human joint reconstruction, spine and trauma since 1980. My experience includes laboratory evaluation of performance characteristics for orthopedic implant and instrumentation systems. Failure modes and effects analyses, risk analyses, identify and apply methods to reduce risk of hazards and harm. Evaluate adequacy of the information contained in the instructions for use (IFU’s), surgical techniques, promotional and other training materials, from the perspective of the medical device industry. Lectures concerning soft tissue and musculoskeletal injury biomechanics.