Discussion (see also: subacromial bursectomy) subacromial bursa is large synovial membrane which is adherent to undersurface of coracoacromial ligament, acromion, & delltoid laterally, an is adherent to rotator cuff & greater tuberosity; it envelops proximal humerus, & facilitates gliding of proxiaml humerus under coracoacromial arch References Synovial osteochondromatosis in the subacromial bursa. Subacromial/subdeltoid bursa abscesses. An overlooked diagnosis.
– See: – arteries of the upper limb – subclavian vein – thoracic outlet syndrome; – Discussion: – injuries are rare because of overlying bony skeleton; – right subclavian artery originates from innominate artery & passes into neck behind the right SC … Read more
– See: subclavian artery and internal jugular approach – Anatomy: – subclavian vein, which in the adult is approximately 3-4 cm long and 1-2 cm in diameter, begins as a continuation of the axillary vein at the lateral border of the first rib, crosses over the first rib, and passes in front of the … Read more
– Discussion: – to evaluate for Hill Sachs Lesion after dislocations; – Technique: – the patient is supine; – a cassette is placed under the involved shoulder – the palm of the hand of the affected extremity is placed on top of … Read more
Co-Authors: Milford H. Marchant Jr., M.D.; Mark E. Easley, M.D.; James A. Nunley II., M.D. Osteochondral Lesions of the Talus Review Etiology – Primary Causes – Trauma – Ischemic Necrosis – Embolic phenomenon – Ossification Defects – Predisposing Factors – Endocrine Disorders – Peripheral vascular disease – Genetic Predisposition? – 10-25% Bilateral Lesions Evaluation – … Read more
– See: torticollis: – origin: sternal head: anterior surface of the manubrium; clavicular head: superior surface of the medial half of clavicle; – insertion: – lateral surface of the mastoid process of the temporal bone and lateral half of the superior nuchal line of the occipital; – action: – acting unilaterally, … Read more
– Stage I: – edema and hemorrhage: – reversible lesion usually seen in the second and third decade; – exam: – palpable tenderness over the greater tuberosity at supraspinitus insertion – palpalble tenderness along the anterior edge of the acromion; … Read more
– Discussion: – muscular stabilizers – static stabilizers – stabilizers include: glenoid, glenoid labrum, negative intraarticular pressure, glenohumeral capsular ligaments, rotator cuff and scapular muscles; – stabilizers include glenohumeral size, posteriorly angulated glenoid & humeral head, & functional muscle control (most important); – structure that is most responsible for preventing anterior glenohumeral … Read more
– Discussion: – uncommon congenital anamoly which arises from interruption of normal caudal migration of the scapula; – deformity is characterized by elevation & medial rotation of inferior scapula; – involved scapula is both smaller and more cephalad than normal; – in 30% of pts, the scapula … Read more