Hayes + Associates
Injury Biomechanics. Clearly Explained.
Practice Areas
Vehicle Collisions
Low to high speed crashes; sideswipes; multiple vehicle collisions; tractor trailers; buses; ATV's & snowmobiles; rollovers; pedestrians & cyclists; airbag, seat belt, roof crush performance; perception response time; visibility; stop light timing.
Premises Safety
Slips & falls; stairs and railings; ramps & walkways; backyard play equipment; snow and ice conditions; indoor & outdoor lighting; elevator & escalator performance; falling objects; garage door defects.
Slips & Falls
Slips, trips & falls: standing height; construction sites; stairs and ladders; assisted falls from high cliffs and buildings; floor maintenance; foreign substances; sidewalk defects.
Products Liability
Orthopedic implants; Vehicle components: roofs, airbags, seat belts. Industrial vehicles: fork lifts, boom lifts, cranes. Recreational: shoe and cleat claims; bicycle design; sports equipment.
Worker Safety
Lifting and reaching standards; work station design; guarding; repetitive stress conditions; tool design; ergonomics and human factors; Railroad (FELA) and Shipping (Jones Act) claims.
Sports & Recreation
Diving, skiing & terrain parks; trampolines; bouncy houses & inflatables; athletic shoes & cleats; bike, motorcycle and football helmets.
Patent Litigation
Validity & infringement analysis: orthopedic implants, including total joint replacements, fracture fixation devices; new biomaterials; bioengineered tissue replacements.
Criminal Matters
Assaults, homicides, shootings, bullet, arrow and knife path analysis; police involved shootings; restraint conditions; child abuse; assisted falls from heights; vehicular assaults.
Our Team
Wilson C. "Toby" Hayes, Ph.D
President/CEO
Wilson C. “Toby” Hayes, Ph.D., has more than 50 years of academic and consulting experience in biomechanics, orthopaedic research and injury reconstruction, nearly 20 years of it teaching anatomy at Harvard Medical School and bioengineering at MIT.
Erik D. Power, P.E.
Professional Engineer
Erik D. Power, M.S., P.E., consults in the areas of vehicular accident reconstruction and injury biomechanics. He is a Registered Professional Mechanical Engineer in the State of Oregon, and a Fully Accredited Traffic Accident Reconstructionist.
Kristen E. Lipscomb, Ph.D.
Biomedical Engineer
Kristen Lipscomb, Ph.D. consults in the areas of injury biomechanics, orthopaedics, fall biomechanics, and motor vehicle collision reconstruction. She is a Fully Accredited Traffic Accident Reconstructionist and is a Certified XL Tribometrist.
Contact Us
COVID-19 Updates
Art by Deborah Marble for the NY Times.
H+A Staff continues to work primarily from home, using web-based services to enhance communications both internally, and with clients, as well as for meetings, depositions, and trial preparation.
As always, we do all we can to be available and responsive to current and prospective clients. Associates and all staff are available during regular business hours.
When allowed by current health recommendations, we are prepared to travel for site and vehicle inspections, and court testimony.