Open Surgical Repair Restores Joint Forces That Resist Glenohumeral Dislocation

Quantitative Assessment of Glenohumeral Translation after Anterior Shoulder Dislocation and Subsequent Arthroscopic Bankart Repair

“…Thus, the authors recommended a careful repair of the labrum to the inferior glenoid rim during a Bankart reconstruction to avoid recurrent instability. Sciaroni et al 28 Tibone et al 34 presented a study measuring the difference in glenohumeral translation before and after anterior shoulder dislocation and after subsequent Bankart repair. In contrast to our own study, they found a positive correlation of the amount of anterior and posterior translation and the number of glenohumeral dislocations.…”

Biomechanical effects of glenoid retroversion in total shoulder arthroplasty

“…Using specific markings for shoulder positioning, the shoulder testing system permitted highly accurate and precise positioning of the shoulder in a repeatable manner. 3,12,13,15,21 The long axis of the humerus was aligned parallel to the floor, achieving a total of 90°of shoulder abduction (30°of scapular inclination and 60°of glenohumeral abduction). The humerus was rotated, with alignment of the proximal-most portion of the biceps tendon with the anterior-most edge of the acromion; this was defined as 90°of external rotation.…”

Stability and instability of the glenohumeral joint: The role of shoulder muscles

“…33 When the shoulder is forcibly placed in this position, traumatic glenohumeral joint dislocation may occur. 27,36 Subsequently placing the glenohumeral joint in the apprehension position may elicit symptoms of anterior instability. 15 To improve treatments of shoulder instability, we have focused on defining the contribution of the shoulder muscles to glenohumeral joint stability in clinically relevant positions.…”