290 likes | 459 Views
Sports M edicine C linic. Presentation. Dull intermittent pain localize in the posterior and lateral shoulder Symptoms are exacerbated by active and resistant abduction and external rotation of shoulder. Name some of the causes of shoulder pain?. Shoulder pain. Thoracic outlet syndrome
E N D
Presentation • Dull intermittent pain localize in the posterior and lateral shoulder • Symptoms are exacerbated by active and resistant abduction and external rotation of shoulder
Shoulder pain • Thoracic outlet syndrome • Rotator cuff tear • Impingement • Cervical spine pathology
DDX? • Point tenderness at insertion of teres minor
Exam - DDX • Atrophy of teres minor and deltoid
DDX? • Paraesthesia occurs in cutaneous sensory distribution of axillary nerve , overlying the deltoid muscle in the lateral shoulder
Quadralateral Space • Teres minor • Long head of triceps • Teres major • Humeral shaft
Clinical Symptoms • Compression of the axillary nerve and posterior circumflex humeral artery • Especially in abduction and ER (ABER) from fibrous bands • Symptoms from nerve or vascular compression
Quadralateral Space Syndrome • Rare • Frequently misdiagnosed • Images – confirm the diagnosed
Causes of QSS • Fibrous band – tightens in abduction and external rotation • Paralabral cysts – associated with inferior labral tears • Tumors, hematoma
EMG • Non=specific • Inconsistent results
MR arthrogram • Labral tear
MRI • Atrophy of teres minor • Cysts • Tumor • hematoma
Angiography • Flow occlusion of the posterior humerus artery with the arm abducted • ? Seen in normal • Valid study
Treatment • Little weakness -physical therapy - (4 to 6 weeks) • Significant weakness – surgical (Lysis of fibrous bands within the QSS (3 to 6 months)