J Korean Orthop Assoc.  2007 Apr;42(2):177-183. 10.4055/jkoa.2007.42.2.177.

Clinical Features and Arthroscopic Findings of Partial Thickness Rotator Cuff Tears

• Kwon OS
• Kim YS
• Lee KY

• KMID: 854585
• DOI: http://doi.org/10.4055/jkoa.2007.42.2.177

Abstract

PURPOSE: To compare the clinical features of partial thickness rotator cuff tears according to location of the tear and to classify the partial thickness rotator cuff tears based on arthroscopic findings. MATERIALS AND METHODS: This study evaluated 138 patients who were arthroscpically proven to be partial thickness rotator cuff tears. Three groups were identified; 56 in the articular side tear, 58 in the bursal side tear, 24 in the both sides tear. The comparison included preoperative clinical features such as pain, range of motion and impingement sign. The partial thickness rotator cuff tears were classified according to the arthroscopic findings. RESULTS: There was no significant difference in the clinical features between articular, bursal and both sides tears. Partial thickness rotator cuff tear can be divided into 5 groups. Type I (n=41): fraying or fibrillation on surface of the cuff. Type II (n=35): fiber disruptions with or without displacement. Type III (n=38): flap tear or fragmentation. Type IV (n=16): both articular and bursal side tears without communications. Type V (n=8): impending a full thickness tear. CONCLUSION: It is difficult to differentiate the clinical features based on the physical examinations according to the locations of tears. Newly designed classification may help in deternmining the appropriate arthroscopic treatment of a partial thickness rotator cuff tear.

Keyword

Rotator cuff; Partial thickness tear; Arthroscopy

Figure

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  Fig. 1 Posterior arthroscopic view indicated fraying and fibrillations on the articular surface of the cuff. RC, rotator cuff; H, humeral head.

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  Fig. 2 Arthroscopic view of an articular surface of the cuff presented fiber disruption with displacement. H, humeral head; RC, rotator cuff.

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  Fig. 3 Arthroscopic image showing flap formation and fragmentation on articular side. RC, rotator cuff; H, humeral head.

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  Fig. 4 Arthroscopic image showing fragmentation on the bursal side of the rotator cuff. A, acromion; RC, rotator cuff.

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  Fig. 5 Arthroscopic views revealed (A) displaced fiber disruption on the articular side of the cuff and (B) a large flap formation on bursal side of the cuff. RC, rotator cuff; H, humeral head.

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  Fig. 6 Arthroscopic finding demonstrated almost completely ruptured tendon fibers like full thickness tear with some fibers remaining in the middle layers of the cuff. (A) articular side and (B) bursal side. RC, rotator cuff; H, humeral head.

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