Supraspinatus

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Other Names Rotatory Cuff Shoulder Heads Supraspinatus Movement Shoulder Abduction External Rotation * Internal Rotation * Stabilization Attachments Origin Scapula (Superior) Supraspinous fossa Insertion Humerus Greater Tubercle (Superior) Related Muscles See other rotator cuff muscles: Subscapularis Infraspinatus Teres Minor Comments *Supraspinatus assists in external rotation when shoulder is abducted and internal rotator when shoulder is flexed (Ackland DC, Pandy MG, 2011). The supraspinatus is the most often injured rotator cuff muscle. The inability to smoothly abduct the arm against resistance may indicate a rotator cuff injury. See supraspinatus weakness.