Muscle compensation at the glenohumeral joint with increased injury severity: a computational assessment

Glenohumeral joint stability is determined by the function of the muscles crossing it. Our goal was to identify how muscles adapt in the context of an injury, like rotator cuff tear (RCT), to maintain joint stability. Computational model simulations were used to predict force contributions of muscles crossing the glenohumeral joint for varying scenarios representing increased RCT severity. Results reveal that the muscles crossing the glenohumeral joint adapt their function by significantly changing force contributions to maintain joint stability with increasing severity of injury.