Data Trace Editor – Discussion: – w/ in joint capsule, variable ligs (superior, middle, & IGHL), are primary components of static restraint in glenohumeral joint. – glenoid version: – Biomechanical Evaluation of Glenoid Version and Dislocation Direction on the Influence of Anterior Shoulder Instability and Development of Hill-Sachs Lesions – Scapulohumeral Ligaments: (5 … Read more
– Discussion: – its essential to restore anatomic length of humerus to provide proper amount of tension in deltoid so that patient will maintain the ability to forward flex; – in the case of a hemiarthroplasty performed for 4 part frx, length will always have to be regained; … Read more
– Anterior Portal: – anterior portal is usually used for introduction of instruments; – this portal is placed under arthroscopic visualization from the posterior portal; – the needle is placed halfway between the AC joint and the lateral aspect of the coracoid; – this … Read more
– Discussion: – see Static Stabilizers – because of shallow socket of GHJ, stability is conferred by capsle, ligaments, & muscle rather than bone; – capsule is somewhat loose & approx double size of humeral head, allowing for extensive range of motion; – shoulder capsule maintains a … Read more
– Discussion: – may be indicated for shoulder instability; – in the report by Greis PE, et al, the authors evaluated 4 cases in which axillary nerve injury which was observed after radiofrequency capsular shrinkage of the shoulder; – authors conclude that injury to the … Read more
– See: Total Shoulder Replacement – Technique: – deliver the proximal humerus: – anteriorly dislocate the humeral head by extending, abducting, and externally rotating the arm; – a blunt Homan retractor is then placed behind the humeral head to maintain its dislocated position; … Read more
– Discussion: – normally no communication exists between the shoulder joint and the subacromial bursae; – when radiopaque dye is injected into the shoulder and is subsequently demonstrated in the subacromial bursa, a rotator cuff tear is present; – Indications: – for dx of complete rotator cuff tears, adhesive capsulitis, … Read more
– Discussion: – Component Characteristics: – cylindrical reamers: 6.5, 9, 12, 15 mm; – angle of inclination: – 125, 130, 135, 140 deg options; – if inclination is between sizes choose the smaller size; – humeral retroversion: … Read more
– Discussion: – affects young childhood; – growth plate is thick; – large hypertrophying chondrocytes – weak zone provisional calcification – mechanism: – pure shear; – frx lines follow growth plate, separating epiphysis … Read more
– See: – massive rotator cuff tear – disscussion – shoulder hemiarthroplasty – Discussion: – by definition, a massive RTC tear invovles tears of more than 5 cm and involves more than than one tendon; – further, massive tears cannot be repaired … Read more