Role of Ligament Stabilizers of the Proximal Carpal Row in Preventing Dorsal Intercalated Segment Instability: A Cadaveric Study

The Journal of Bone and Joint Surgery. American Volume
Alfonso J PérezS W Wolfe

Abstract

Isolated injuries of the scapholunate interosseous ligament (SLIL) are insufficient to produce dorsal intercalated segment instability. There is no consensus about which additional ligamentous stabilizers are critical determinants of dorsal intercalated segment instability. The aim of this study was to evaluate the role of the long radiolunate (LRL), scaphotrapeziotrapezoid (STT), and dorsal intercarpal (DIC) ligaments in preventing dorsal intercalated segment instability. Thirty fresh-frozen forearms were randomized to 5 ligament section sequences to study the SLIL, LRL, STT, and DIC ligaments. The DIC-lunate insertion (DIC) and scaphoid insertion (DIC) were studied separately; the DIC insertions on the trapezium and triquetrum were left intact. Loaded posteroanterior and lateral fluoroscopic images were obtained at baseline and repeated after each ligament was sectioned. After each sequence, the wrists were loaded cyclically (71 N). The radiolunate angle was measured with load. Dorsal intercalated segment instability was defined as an increase of >15° in the radiolunate angle compared with baseline. Division of the SLIL did not increase the radiolunate angle. Section of the SLIL+LRL or SLIL+DIC significantly increased the rad...Continue Reading

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Citations

Jul 24, 2020·The Journal of Hand Surgery, European Volume·Matthew T Brown, Alastair J Graham
Aug 19, 2020·Emergency Radiology·Ayooluwa Ibitayo, Nicholas M Beckmann
Sep 22, 2020·The Journal of Hand Surgery, European Volume·Christophe MathoulinChihab Taleb
Nov 10, 2020·The Journal of Hand Surgery·Andrea H W ChanNina Suh
Mar 27, 2021·The Journal of Hand Surgery·Jessica FigueroaWalter H Short
Apr 10, 2021·Clinical Biomechanics·Tadanobu OnishiYasuhito Tanaka
Apr 20, 2021·Journal of Hand and Microsurgery·Ilana G MarguliesEitan Melamed
Nov 14, 2020·The Journal of Hand Surgery, European Volume·Michael Sandow
May 4, 2021·The Bone & Joint Journal·Sanjeev KakarJohn R Fowler
Jun 4, 2021·Seminars in Musculoskeletal Radiology·Rainer SchmittJan-Peter Grunz
Jun 11, 2021·Journal of Wrist Surgery·Lionel AthlaniPedro Augusto Gondim Teixeira
Jun 29, 2021·The Journal of Hand Surgery·Francois LoiselScott Wolfe
Jul 24, 2021·The Journal of Hand Surgery·Lauren E WesselScott W Wolfe

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