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Biomechanics

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Biomechanics

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. This can be applied in such diverse cases as determining the post-impact motion of occupants involved in an automobile accident, or calculating the impact force of an elevator door closing on a person’s knee. A biomechanical analysis may be accomplished with simplified stick figure models or complex 3D computer simulation techniques.

Biomechanical engineers often serve as expert witnesses, or create computer simulations and accident reconstructions for use in injury litigation.

Our engineers have been assisting attorneys and insurance representatives in investigating accidents since 1990. We have a highly qualified staff of engineers with advanced degrees from top-tier universities who have provided testimony on behalf of both plaintiffs and defendants at trial

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Previous Cases

Fall from Swing


A child was swinging on a plastic swing seat when he fell off and suffered a severe head injury. The defense claimed that he must have been standing or otherwise misusing the swing when the accident occurred. We used a biomechanical simulation to demonstrate that the low coefficient of friction (COF) between the swing seat and the child's shorts could have resulted in the fall he described and that an alternate seat design with a higher COF would have prevented the accident.

Fall Over Balcony Railing


A woman was injured when she struck a balcony railing which gave way, allowing her to fall to the ground 10 feet below. She claimed she was walking at a normal speed when she tripped and fell into the railing. Our biomechanical analysis of the impact and fall based on the balcony height and her rest position, determined that she was moving much faster than a normal walking speed when she struck the railing. This result supported evidence that she was pushed, and helped the case settle rapidly.