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Related Experiment Videos

Tendon repair using flexor tendon splints: an experimental study

M Aoki1, P R Manske, D L Pruitt

  • 1Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO 63110.

The Journal of Hand Surgery
|November 1, 1994
PubMed
Summary
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Dacron tendon splints offer robust mechanical strength for tendon repair, comparable to the Savage technique. These splints may enable early active motion following surgery, warranting further in vivo investigation.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Musculoskeletal Research

Background:

  • Tendon injuries require effective surgical repair to restore function.
  • Traditional repair methods like Kessler and Becker have limitations in mechanical strength.
  • Novel techniques are needed to improve tendon repair outcomes.

Purpose of the Study:

  • To evaluate the mechanical strength of Dacron tendon splints for profundus tendon repair.
  • To compare the performance of dorsal and internal tendon splints against established techniques.
  • To assess the potential for early active motion after repair with splinting.

Main Methods:

  • Human cadaver profundus tendons were used for mechanical testing.
  • Dacron tendon splints were applied dorsally and internally to lacerated tendons.

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  • Repairs were compared to modified Kessler, Becker, and Savage techniques.
  • Ultimate tensile strength and gap strength were measured.
  • Cyclic testing was performed to evaluate repair stability.

    • Main Results:

    • Dorsal and internal Dacron tendon splints demonstrated significantly higher ultimate tensile strength than Kessler and Becker techniques.
    • The dorsal tendon splint exhibited significantly greater gap strength compared to all other methods.
    • No significant difference in gap changes during cyclic testing was observed.
    • Kessler and Becker repairs showed higher failure rates during cyclic loading.

    Conclusions:

    • Dacron tendon splints provide mechanical strength comparable to the Savage technique for tendon repair.
    • The dorsal tendon splint technique offers superior gap strength.
    • Tendon splint repairs may possess sufficient strength to permit early postoperative active motion against minimal resistance.
    • Further in vivo studies are recommended to validate these findings.