ORS Poster

This study aimed to quantify the magnitude of strain in the glenohumeral capsule during tensile elongation simulating injury and the resulting nonrecoverable strain. Samples of the anterior band of the inferior glenohumeral ligament from 5 cadavers were subjected to tensile elongation to simulate injury, followed by reloading to measure nonrecoverable strain. Maximum principal strains averaged 12.2% during simulated injury and 2.7% for nonrecoverable strain, with a high correlation between the two. The results suggest that more severe injuries may result in higher amounts of permanent deformation requiring varying degrees of capsular plication during surgical repair.