Abstract
Partial-thickness rotator cuff tears comprise a partial interruption of the continuity of the tendon, with no relation to glenohumeral joint and subacromial bursa, as opposed to complete tears or the rotator cuff, and essentially affect the supraspinatus tendon. These might be in the form of bursal side tears, articular side tears or intrasubstance tears. Partial bursal side tears are explained by an impingement syndrome. Partial articular side tears are explained by a degeneration of the tendon and may be favoured by a trauma in patients over 40. In younger patients, partial bursal side tears may be due to an anterior instability, a posterior-superior glenoid impingement or to a trauma. The frequency of partial intrasubstance tears is probably underestimated because of the difficulties of diagnosis, now improved by magnetic resonance imaging. The therapeutic strategy depends on the age of the patient, the anatomic type and the extent of the lesion.
Published Version
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