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Early and mid-range followup studies of shoulder arthroplasty have been encouraging, showing good and excellent results in > 90% of shoulders. Despite this success, complications in shoulder replacement surgery are inevitable, with an incidence of approximately 14%. Numerous complications have been identified and include the following factors in order of(More)
We reviewed the records of sixteen patients, fifteen to sixty-two years old, who had glenoid hypoplasia with or without an associated deformity of the humeral head. The patients were divided into three groups: those who had bilateral glenoid hypoplasia without instability of the shoulder (Group I), those who had bilateral glenoid hypoplasia with instability(More)
Between 1980 and 1994, 221 shoulders with recurrent anterior glenohumeral subluxation or dislocation were reconstructed at our institution. At the time of the operation, thirteen shoulders were found to have an irreparable injury of the subscapularis muscle, which we believed to be a contributing factor to the ongoing instability. All but three of the(More)
BACKGROUND Loosening of the glenoid component continues to be the foremost cause of medium and long-term failure of shoulder replacements. The purpose of this study was to evaluate the clinical and radiographic results of a minimally cemented all-polyethylene pegged glenoid component designed for biologic fixation. METHODS Forty-four shoulders in(More)
Prosthetic shoulder arthroplasty must replicate humeral geometry or risk compromising success. The purpose of our study was to evaluate humeral head replacement with respect to replicating proximal humeral anatomy. Using scanning technology and AutoCAD, this study was conducted in 2 parts. First, geometric parameters were measured on 35 cadaveric humeri and(More)
A retrospective study was performed on twenty shoulders in nineteen patients who had been managed for severe loss of external rotation of the glenohumeral joint after a previous anterior capsulorrhaphy for recurrent instability. All patients had noted a restricted range of motion, and seventeen shoulders had been painful. In seven shoulders, the humeral(More)
Current indications for shoulder arthrodesis include posttraumatic brachial plexus injuries, paralysis of the deltoid muscle and rotator cuff, chronic infection, failed revision arthroplasty, severe refractory instability, and bone deficiency following resection of a tumor in the proximal aspect of the humerus. The trapezius, levator scapulae, serratus(More)
Avascular necrosis (AVN) is a relatively uncommon cause of glenohumeral arthritis. Previous retrospective reviews of shoulder arthroplasty for AVN have shown very good results in small numbers of patients. This study prospectively evaluated a consecutive series of 21 shoulders in 19 patients treated with the same modular prosthesis at a single institution.(More)
Fifteen patients with fractures adjacent to a humeral prosthesis were treated between 1986 and 2002. There were 10 females and 5 males. The average age was 58 years. The fractures were classified as to location relative to the prosthesis. Type I fractures (N = 3) occurred proximal to the tip of the prosthesis. Type II fractures (N = 7) occurred in which the(More)