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Subacromial pressure during diagnostic shoulder tests
G Sigholm1, J Styf, P Herberts
1Sahlgren Hospital, Göteborg, Sweden; Departments of Orthopaedics, East Hospital, Sweden.
Abstract:
The pressure in the subacromial bursa during passive provocation tests and during active motion was recorded in five healthy persons, and in seven patients with a subacromial pain syndrome. During the passive impingement test, the mean bursa pressure increased from 6 to 56 mmHg in healthy persons and from 8 to 45 mmHg in the patients. A passive test for anterior glenohumeral instability yielded bursa pressures below 0 mmHg in both groups. Active flexion of the arm at the shoulder produced a pressure increase up to 90° and a pressure decrease between 90 and 180° of flexion for both groups.
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