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Type: Journal article
Title: Anatomic foveal reconstruction of the triangular fibrocartilage complex with a tendon graft
Author: Bain, G.
McGuire, D.
Lee, Y.
Eng, K.
Zumstein, M.
Citation: Techniques in Hand and Upper Extremity Surgery, 2014; 18(2):92-97
Publisher: Lippincott, Williams & Wilkins
Issue Date: 2014
ISSN: 1089-3393
Statement of
Bain, Gregory I., McGuire, Duncan Lee, Yu Chao Eng, Kevin Zumstein, Matthias
Abstract: An acute injury to the triangular fibrocartilage complex (TFCC) with avulsion of the foveal attachment can produce distal radioulnar joint (DRUJ) instability. The avulsed TFCC is translated distally so the footprint will be bathed in synovial fluid from the DRUJ and will become covered in synovitis. If the TFCC fails to heal to the footprint, then persistent instability can occur. The authors describe a surgical technique indicated for the treatment of persistent instability of the DRUJ due to foveal detachment of the TFCC. The procedure utilizes a loop of palmaris longus tendon graft passed through the ulnar aspect of the TFCC and into an osseous tunnel in the distal ulna to reconstruct the foveal attachment. This technique provides stability of the distal ulna to the radius and carpus. We recommend this procedure for chronic instability of the DRUJ due to TFCC avulsion, but recommend that suture repair remain the treatment of choice for acute instability. An arthroscopic assessment includes the trampoline test, hook test, and reverse hook test. DRUJ ballottement under arthroscopic vision details the direction of instability, the functional tear pattern, and unmasks concealed tears. If the reverse hook test demonstrates a functional instability between the TFCC and the radius, then a foveal reconstruction is contraindicated, and a reconstruction that stabilizes the radial and ulnar aspects of the TFCC is required. The foveal reconstruction technique has the advantage of providing a robust anatomically based reconstruction of the TFCC to the fovea, which stabilizes the DRUJ and the ulnocarpal sag.
Keywords: Triangular Fibrocartilage complex
foveal tear
DRUJ instability
writs arthroscopy
TFCC repair
Rights: © 2014 by Lippincott Williams & Wilkins
DOI: 10.1097/BTH.0000000000000044
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