Supraspinatus — Anatomy & Clinical Tests
Origin: supraspinous fossa; insertion: superior facet of greater tuberosity; innervation: suprascapular nerve (C5–6). Action: initiates abduction, contributes to humeral head depression and centering. Blood supply: suprascapular artery; critical zone of hypovascularity near tendon insertion (degeneration site). Impingement & tears: subacromial impingement (Neer), degenerative & traumatic tears; clinical tests for integrity. Tests: Jobe (empty can), full can, drop‑arm, external rotation lag (for...
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10Which structure forms the superior boundary of the subacromial space?
mcqWhat is the primary action of the supraspinatus muscle?
mcqWhich clinical test is specifically designed to assess the integrity of the supraspinatus tendon?
mcqThe suprascapular nerve innervates which of the following muscles?
mcqWhich of the following is a common site of entrapment for the suprascapular nerve?
mcqWhat is the critical zone of the supraspinatus tendon?
mcqWhich imaging modality is the best for assessing the quality of the supraspinatus tendon?
mcqWhat does the full can test primarily assess?
mcqWhich type of acromion has the highest risk of impingement on the supraspinatus tendon?
mcqIn managing a supraspinatus tear, which treatment is indicated for symptomatic tears based on size?