This Ph.D. is President of his own consulting firm providing expert testimony in injury biomechanics for both plaintiff and defense cases associated with personal injury, products liability, premises liability, wrongful death and medical malpractice. He routinely qualifies in court both as an engineering and a medical expert for cases involving motor vehicle accidents; slips, trips and falls; sports injuries, recreation and safety equipment; industrial injuries, ergonomics and repetitive stress syndromes; and medical malpractice.

He is a former director of the Orthopedic Biomechanics Laboratory at Harvard's Beth Israel Deaconess Medical Center and the Maurice E. Mueller Professor of Biomechanics at Harvard Medical School and the Harvard / MIT Program in Health Sciences and Technology. He received a Ph.D. at Northwestern University in 1970 and then spent post-doctoral years in Davos, Switzerland and Stockholm, Sweden. He taught at Stanford University and the University of Pennsylvania before joining the faculties at Harvard Medical School and MIT in 1979. He was named as the holder of the Maurice E. Mueller Professorship of Biomechanics.

He has received a number of awards, including the Borelli Award from the American Society of Biomechanics and the Bristol-Myers Squibb/Zimmer Institutional Grant for Excellence in Research in Orthopaedic Treatment. He is the author of 191 peer-reviewed publications, 63 chapters, and 3 books. He is perhaps best known for his research on the role of falling in the etiology of hip fracture, work that served to revise the notion that hip fractures result primarily from age-related bone loss, or osteoporosis.

He has served Oregon State University as Vice Provost for Research. He continues to conduct NIH-sponsored research and holds faculty appointments in Nutrition and Exercise Science.

• Accident Investigation 
• Accident Reconstruction
• Criminal Litigation
• Ergonomics
• Industrial Injuries
• Injury Biomechanics
• Medical Malpractice
• Motor Vehicle Accidents
• Orthopedic Implants
• Patent Validity and Infringement
• Recreation and Safety Equipment
• Repetitive Stress Syndromes
• Slips, Trips and Falls
• Sports Injuries

• Ph.D., Theoretical and Applied Mechanics
• M.S., Mechanical Engineering
• B.S., Mechanical Engineering

Expert Witness Services;

• Deposition
• Expert Witness Reports
• Expert Witness Testimony
• Technical Consultant
• Trial Testimony