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Related Experiment Videos

Comparative flexor tendon excursion after passive mobilization: an in vitro study.

E Horii1, G T Lin, W P Cooney

  • 1Orthopedic Biomechanics Laboratory, Mayo Clinic/Mayo Foundation, Rochester, Minn. 55905.

The Journal of Hand Surgery
|May 1, 1992
PubMed
Summary
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Postoperative splinting for flexor tendons results in lower excursion than predicted. The S-splint technique showed greater tendon excursion in zone II compared to K-splint and P-splint methods.

Area of Science:

  • Orthopedics
  • Hand Surgery
  • Biomechanical Engineering

Background:

  • Flexor tendon injuries often require postoperative splinting to facilitate healing and gliding.
  • Traditional splinting methods aim to achieve specific tendon excursions, but their efficacy is debated.
  • Understanding tendon excursion is crucial for optimizing rehabilitation protocols.

Purpose of the Study:

  • To investigate flexor tendon excursions during passive joint motion under various loading conditions.
  • To compare the efficacy of a novel synergistic wrist splint (S-splint) with traditional splinting methods (Kleinert and modified Kleinert splints) for flexor tendon mobilization.
  • To evaluate the impact of passive joint motion on tendon gliding in zone II.

Main Methods:

  • Two experimental studies were conducted.

Related Experiment Videos

  • Study 1: Evaluated tendon excursions with passive joint motion under different loading conditions.
  • Study 2: Compared S-splint, Kleinert splint (K-splint), and P-splint efficacy in zone II, measuring excursion magnitude and differential excursion between flexor digitorum profundus and superficialis.

    • Main Results:

    • Measured tendon excursions under low tension were approximately half of theoretically predicted values.
    • In zone II, mobilization magnitude decreased in the order: S-splint > P-splint > K-splint (p < 0.05).
    • Passive proximal interphalangeal joint motion was most effective for increasing tendon gliding in zone II.

    Conclusions:

    • Current splinting methods may not achieve predicted flexor tendon excursions, particularly under low tension.
    • The S-splint demonstrates superior efficacy in promoting tendon excursion in zone II compared to traditional splints.
    • Passive proximal interphalangeal joint motion is a key factor in enhancing tendon gliding post-surgery.