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Related Experiment Videos

In-vitro strength of flexor-tendon repairs

D W Sanders1, G I Bain, J A Johnson

  • 1Department of Surgery, University of Western Ontario, London.

Canadian Journal of Surgery. Journal Canadien De Chirurgie
|December 1, 1995
PubMed
Summary

New flexor tendon repair techniques show improved strength over the standard Tajima method. The Savage technique demonstrated the highest load tolerance, while Silfverskiold was quickest, though all increased tendon bulk.

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Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering
  • Hand surgery

Background:

  • Flexor tendon injuries in the hand require effective repair techniques.
  • The standard Tajima technique is widely used but has limitations.
  • New techniques aim to improve strength, reduce bulk, and enhance ease of repair.

Purpose of the Study:

  • To compare the standard Tajima flexor tendon repair technique with three novel methods.
  • To evaluate differences in repair strength, technical ease, and resulting bulk.
  • To identify potentially superior techniques for flexor tendon repair in the hand.

Main Methods:

  • A randomized analysis of human cadaver flexor digitorum superficialis tendon repairs.
  • Comparison of the standard Tajima (modified Kessler) technique against Halsted, Savage, and Silfverskiold techniques.

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  • Evaluation of repair time, cross-sectional dimension, and load to failure.

    • Main Results:

    • The Savage repair exhibited the highest load tolerance, followed by Halsted, Silfverskiold, and Tajima.
    • The Silfverskiold technique was the least time-consuming, followed by Tajima, Halsted, and Savage.
    • All tested techniques increased tendon cross-sectional dimensions, with Silfverskiold increasing it by at least 50% and Savage by over 100%.

    Conclusions:

    • All three new techniques provided greater initial static strength compared to the standard Tajima method.
    • While none performed ideally, new techniques offer advantages in strength.
    • Further in-vitro and in-vivo studies are needed to optimize these novel flexor tendon repair techniques.