The science of applying mechanical laws to analyze human movements.

Biomechanics is the study of how the body’s muscles, bones, tendons, and ligaments interact to produce movement—applying mechanical principles to understand injury mechanisms.

At IRSA, we use biomechanics to connect the dots between accident reconstruction and medical diagnosis. Our analyses apply anatomy, physics, and engineering to assess whether reported injuries are consistent with the forces involved in a specific incident.

Doctors diagnose injuries; forensic engineers determine if those injuries could have plausibly resulted from the accident. Confusing the two can lead to flawed conclusions. That’s why IRSA’s forensic engineers focus solely on causation—using crash test data, injury biomechanics, and standards like HIC, BrIC, and NIC to offer objective, court-ready opinions grounded in science.