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J Hand Surg Am. 2012 Dec;37(12):2611-8. doi: 10.1016/j.jhsa.2012.09.007.

Antipronation spiral tenodesis--a surgical technique for the treatment of perilunate instability.

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Hand and Microsurgery Section, Department of Orthopaedic Surgery, Tan Tock Seng Hospital, Singapore.


Perilunate dislocations involve avulsion or rupture of both intrinsic and extrinsic ligaments around the lunate. If inadequately treated, these ligaments may not heal properly, inducing a particular type of carpal instability characterized by the loss of the ability of the carpus to resist pronation torques. Six ligaments protect the carpus against excessive intracarpal pronation: long radiolunate, palmar and dorsal lunotriquetral, dorsal scapholunate, dorsal intercarpal, and palmar scaphocapitate ligaments. Collectively, these antipronation ligaments have a spiral configuration around the carpus. This article describes a technique to reconstruct this spiral arrangement of ligaments using a strip of flexor carpi radialis. To illustrate the technique, we describe 1 clinical case with a follow-up of 34 months. The so-called antipronation spiral tenodesis is only indicated if the instability is easily reducible, without cartilage damage.

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