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Biomechanical comparison of transosseous and capsular repair of peripheral triangular fibrocartilage tears

  • David S. Ruch
    Affiliations
    Department of Orthopaedic Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina (D.S.R., S.R.A.); and the Center for Hand and Reconstructive Surgery, Shreveport, Louisiana (M.R.R.), U.S.A.
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  • Steven R. Anderson
    Affiliations
    Department of Orthopaedic Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina (D.S.R., S.R.A.); and the Center for Hand and Reconstructive Surgery, Shreveport, Louisiana (M.R.R.), U.S.A.
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  • Michelle R. Ritter
    Affiliations
    Department of Orthopaedic Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina (D.S.R., S.R.A.); and the Center for Hand and Reconstructive Surgery, Shreveport, Louisiana (M.R.R.), U.S.A.
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      Abstract

      Purpose: The purpose of this study was to biomechanically compare the repair strength of peripheral triangular fibrocartilage complex (TFCC) repairs to the distal ulna using transosseous sutures (group I) versus TFCC repairs to the extensor carpi ulnaris tendon subsheath and surrounding dorsal capsule (group II). Type of Study: Cadaveric biomechanical study. Methods: Six matched pairs of fresh-frozen cadaveric upper extremities were procured. Each underwent the creation and repair of a peripheral, ulnar-sided detachment of the TFCC. Following stabilization of the humerus and radius, the maximum translations of the ulna in the dorsal and palmar directions were measured in response to an 8-lb traction load before disrupting the TFCC, after disrupting the TFCC, and after repairing the TFCC. Results: There was a significant increase in the total translation of the ulna following disruption of the TFCC (P <.001) in both groups. The mean and standard deviation of the percent total translation eliminated following TFCC repair for group I specimens (transosseous suture) were 33.8% and 11.6%, respectively. The mean and standard deviation of the percent total translation eliminated following TFCC repair for group II specimens (capsular implantation) were 59.3% and 29.7%, respectively. The observed difference between the repair groups is not significant (P =.157). Conclusions: While disruption of the TFCC does significantly increase distal radioulnar joint (DRUJ) instability and repair of the TFCC does significantly restore DRUJ stability, the results of this study do not show a significant biomechanical difference between the 2 TFCC repair techniques in a cadaveric model.
      Arthroscopy: The Journal of Arthroscopic and Related Surgery, Vol 19, No 4 (April), 2003: pp 391–396

      Keywords

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