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Related Experiment Videos

Scaphoid excision with four-corner fusion.

Matthew Enna1, Peter Hoepfner, Arnold-Peter C Weiss

  • 1Department of Orthopaedics, Brown Medical School, University Orthopedics, 2 Dudley Street, Suite 200, Providence, RI 02905, USA.

Hand Clinics
|November 9, 2005
PubMed
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Scaphoid arthritis, including SLAC and SNAC wrist, can be treated with four-corner fusion. Long-term results show high patient satisfaction and good wrist function, with new techniques like the Spider plate showing promise.

Area of Science:

  • Orthopedics
  • Hand Surgery
  • Biomechanics

Background:

  • Scaphoid pathology significantly impacts carpal kinematics and wrist biomechanics.
  • Scaphoid Instability Advanced Collapse (SLAC) and Scaphoid Non-Union Advanced Collapse (SNAC) wrist arthritis historically led to total wrist arthrodesis.
  • Recent trends favor limited wrist arthrodesis for SLAC/SNAC wrists.

Purpose of the Study:

  • To evaluate the long-term outcomes of four-corner fusions for SLAC/SNAC wrist arthritis.
  • To assess the efficacy of the Spider plate as a novel approach in four-corner fusion.

Main Methods:

  • Review of long-term follow-up data for patients undergoing four-corner wrist fusions.
  • Analysis of functional outcomes, patient satisfaction, and return to vocation.

Related Experiment Videos

  • Evaluation of fusion rates, range of motion, and intercarpal stability with the Spider plate.

    • Main Results:

    • Long-term four-corner fusions demonstrate high patient satisfaction and return to previous vocations.
    • Average wrist function is 60%-70% of the contralateral wrist post-fusion.
    • The Spider plate shows promising fusion rates (100% in initial series), functional range of motion, and intercarpal stability.

    Conclusions:

    • Four-corner fusion is a viable alternative to total wrist arthrodesis for SLAC/SNAC wrists, offering good long-term functional outcomes and patient satisfaction.
    • The Spider plate represents a promising advancement in four-corner fusion techniques, potentially improving fusion rates and wrist function.