J Korean Orthop Assoc.  2007 Apr;42(2):280-283. 10.4055/jkoa.2007.42.2.280.

Solitary Synovial Chondromatosis as a Cause of Trigger Finger at the A3 Pulley: A Case Report

• Yoo MJ
• Seo JB
• Kim JP
• Jeon SH
• Lee WA

• KMID: 854600
• DOI: http://doi.org/10.4055/jkoa.2007.42.2.280

Abstract

A trigger finger is commonly secondary to stenosing tenosynovitis at the A1 pulley. However, there have been occasional reports of triggering at other sites as well as from other etiologies. We describe a patient who suffered a triggering of the left middle finger at the A3 pulley due to the solitary synovial chondromatosis obstructing the flexor tendon from gliding.

Keyword

A3 pulley; Trigger finger; Tenosynovitis; Synovial chondromatosis

Figure

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  Fig. 1 Plain radiographs of the middle finger. Both the lateral and posteroanterior view of the finger showed a small calcific body in the soft tissue volar to the proximal interphalangeal joint (arrow).

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  Fig. 2 Intraoperative photographand schematic diagram. (A, B)A fusiformnodule of the flexor digitorumprofundus tendonwas noted between the A2 and A4 pulley (asterisk). (C, D) After incising the nodule, a small hard mass with a chondroid appearance appeared in the inner part (arrow head).

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  Fig. 3 Photomicrographs of the solitary synovial chondromatosis. The resected tumor was comprised of a cartilaginous nodule and a synovial lining (Stain, hematoxylin and eosin;original magnification, ×12.5).

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