DRUJ Instability: Arthroscopic Repair of the Detached TFCC to the Fovea of the Ulna
Recent anatomical and biomechanical studies demonstrated that the triangular fibrocartilage complex (TFCC) is the primary stabilizer of the distal radioulnar joint (DRUJ); thus TFCC tear indicates DRUJ instability. Details of DRUJ instability have been gradually revealed, and rupture of the radioulnar ligament (RUL) at the fovea area, where is its main attaching portion to the ulna and is the isometric point during forearm rotation as the rotation axis passes, is responsible for DRUJ instability. Physical examination and image diagnosis can indicate foveal detachment of the TFCC, while DRUJ arthroscopy is superior to diagnose rupture of the RUL. Arthroscopically assisted repair technique and all arthroscopic transosseous repairs are described in this chapter, and both are promising techniques in the treatment of foveal disruption of the TFCC.
KeywordsSuture Anchor Ulnar Styloid Ulnar Variance Forearm Rotation Extensor Retinaculum
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