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Scaphotrapeziotrapezoid Arthrodesis: Systematic Review.

Andrew R Stephens1, Brittany N Garcia2, Miranda J Rogers2

  • 1School of Medicine, University of Utah, Salt Lake City, UT.

The Journal of Hand Surgery
|January 16, 2022
PubMed
Summary

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Scaphotrapeziotrapezoid (STT) arthrodesis shows low failure rates and acceptable wrist function post-surgery. This systematic review confirms its efficacy for wrist pathologies, with age being a factor in complications.

Area of Science:

  • Orthopedic Surgery
  • Hand Surgery
  • Musculoskeletal Research

Background:

  • Scaphotrapeziotrapezoid (STT) arthrodesis is a surgical procedure for various wrist conditions.
  • Evaluating the outcomes and complications of STT arthrodesis is crucial for clinical decision-making.

Purpose of the Study:

  • To systematically review complications and outcomes following STT arthrodesis.
  • To determine the rates of nonunion and conversion to total wrist arthrodesis.
  • To assess postoperative wrist range of motion, grip strength, and functional scores.

Main Methods:

  • Systematic literature review of major databases.
  • Inclusion of 30 studies analyzing 1,429 procedures in 1,404 patients.
  • Multivariable analysis to identify factors associated with outcomes.
Keywords:
ComplicationsSTT fusionsystematic review

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Main Results:

  • Pooled nonunion rate was 6.3%; conversion to total wrist arthrodesis was 4.2%.
  • Mean wrist flexion: 40.7°, extension: 49.7°; grip strength: 75.9% of the contralateral hand.
  • Kienbock disease showed a lower nonunion rate (3.3%) compared to other indications (14.1%). Increasing age was associated with complications.

Conclusions:

  • STT arthrodesis demonstrates a low failure rate and acceptable functional outcomes.
  • Postoperative wrist range of motion and strength are comparable to the non-affected hand.
  • Age is a significant factor influencing complications after STT arthrodesis.