– Discussion: – used to evaluate capsule of shoulder, & glenoid labrum, subscapularis & long head of the biceps, and the humeral head; – glenoid labrum produces low signal intensity since it is made of fibrous tissue; – Hill-Sachs lesion, seen as a notched defect of flattening of humeral … Read more
– Exposure of the Subscapularis: – the upper portion of the subscapularis tendon is exposed by partial release of the CA ligament off the coracoid, by placement of a Homan retractor directly above the coracoid, and by abduction and external rotation of the arm; – the upper portion of the … Read more
– Discussion: – operative considerations: hemiarthroplasty vs total shoulder arthroplasty – anatomy: – normal population, glenoid version: from 5 deg of anteversion to 15° of retroversion, with an avg preop retroversion range from 1 deg to 6 deg; – surgical goal of resurfacing is to place the glenoid in 0° … Read more
– Discussion: – up to 80 % of patients w/ traumatic DJD may expect a good to excellent result at 5 years; – up to 30 % of patients will sustain a major complication over 5 years, which often will require and additional operation; – indications: – end stage rheumatoid arthritis; – severe intractable pain … Read more
Discussion when the innervated ligamentous layer of the outer annulus fibrosis is stretched because of segmental instability, pain results; acute sprain probably represents partial tearing of annular tissue; if annular tissue becomes weakened to the point of allowing nucleus to protrude beyond the normal confines of the annulus, it may actually be a prelude to … Read more
Discussion results from fibrosis of sternal head; can result from unilateral shortening of sternocleidomastoid, commonly associated with fibrosis of the muscle; may also involve the platysma and scalene muscles; birth trauma, occlussion of venous flow, or hematoma results in fibrosis of muscle & palpable mass noted w/in first 4 wks of life; nontender enlargement may … Read more
– See: throwing injuries: and elbow throwing injuries – Phases of Throwing: – wind up – early cocking: deltoid and rotator cuff are active; – late cocking phase: – muscle activity: – shoulder is placed in … Read more
– See: – Throwing Elbow: – MCL of elbow: – Diff Dx Pediatric Throwing Elbow – Throwing Shoulder: Throwing Guidelines: – 8-10 year olds: 37 to 67 pitches in approximately 1.5 to 2.5 games per week. – 11-12 year olds: 50 to 86 pitches in approximately 1.5 to 2.5 games … Read more
– See: Three Part Fracture Dislocation and Four Part Fracture – Discussion: – tuberosity frag + displaced surgical neck fragment; – unstable shafts may be driven into mass of deltoid muscle & may be anterior to the proximal fragment; – poor bone contact will lead to delayed or nonunion in most cases; – subtypes: – greater … Read more