ARTHROGRAPHY AND COMPUTED ARTHROTOMOGRAPHY STUDY OF 70 PATIENTS WITH PRIMARY GLENOHUMERAL OSTEOARTHRITIS

Seventy patients with primary glenohumeral osteoarthritis underwent ro entgenographic and computed tomography studies, Glenohumeral joint spa ce loss and a normal acromiohumeral space were the roentgenographic in clusion criteria, Women made up 61% of the sample. The dominant should er was affected in 95% of cases and both shoulders in 41%, Mean age at first evaluation was 65 years, Arthrography showed a tear confined to the supraspinatus tendon in 16 cases (23%); no patients had tears inv olving more than one tendon, Computed tomography demonstrated glenoid retroversion (mean 160) but was unable to differentiate primary glenoi d dysplasia from wear due to osteoarthritis. Posterior subluxation of the humeral head was found in 28 cases (40%) but was not consistently correlated with the presence of glenoid retroversion.