Twenty embalmed shoulders were used for anatomic study, and 5 specimens of the anterosuperior part of the glenohumeral joint were histologically studied.
Anatomically, the most superior part of the subscapularis tendon was attached to the upper margin of the lesser tuberosity and extended as a thin tendinous slip to the fovea capitis of the humerus. The superior glenohumeral ligament ran spirally along the biceps tendon. Histologically, the superior glenohumeral ligament was attached to the tendinous slip. There was no clear boundary between the superior glenohumeral and coracohumeral ligament.
To keep the biceps tendon in place and stabilized, tension in the superior glenohumeral ligament and the buttress support of the most superior insertion point of the subscapularis from behind the ligament may be necessary.
Basic Science