Changes in passive stiffness and length of the semitendinosus muscles in rats with arthritis-induced knee flexion contracture

Our results suggest that increased muscle stiffness, rather than muscle shortening, contributes to myogenic contracture detected during the early stage of arthritis. The increased muscle stiffness cannot be explained by excess collagen.
Source: Clinical Biomechanics - Category: Orthopaedics Authors: Source Type: research