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Related Experiment Videos

Comparison of zone II flexor tendon repairs using an in vitro linear cyclic testing protocol.

G Matheson1, S Nicklin, M P Gianoutsous

  • 1Orthopaedic and Surgical Research Laboratories, University of New South Wales, Prince of Wales Hospital, Randwick, NSW 2031, Australia.

Clinical Biomechanics (Bristol, Avon)
|June 21, 2005
PubMed
Summary

The Savage repair technique demonstrated superior survivorship under dynamic loading compared to Kessler repairs. This study highlights the Savage repair

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Looped suture properties: implications for multistranded flexor tendon repair.

The Journal of hand surgery, European volume·2015

Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering
  • Materials science

Background:

  • Evaluating suture techniques for tendon repair is crucial for successful rehabilitation.
  • Modified Kessler and Savage core suture techniques with varying epitenon repairs were assessed.
  • Understanding dynamic properties under cyclic loading is key to predicting repair integrity.

Purpose of the Study:

  • To compare the dynamic properties and survivorship of three different suture configurations.
  • To assess the risk of gap formation in modified Kessler and Savage repairs under simulated early rehabilitation loads.

Main Methods:

  • In vitro cyclic testing protocol simulating early rehabilitation (20 N and 33 N, 500 cycles).
  • Survivorship analysis using dynamic mechanical testing.

Related Experiment Videos

  • Gap formation measured electronically every 100 cycles; analyzed using log-rank test and relative risk.

    • Main Results:

    • No increased gap formation risk for cross-stitched epitenon Kessler repair versus standard Kessler.
    • Savage repair showed significantly lower risk of gap formation (>10-fold for standard, >7-fold for cross-stitched Kessler).
    • The Savage repair demonstrated superior performance under dynamic loading conditions.

    Conclusions:

    • The Savage repair technique is superior to modified Kessler repairs for tendon repair under dynamic loading.
    • Survivorship curves and relative risk analysis offer valuable insights into the mechanical behavior of surgical repairs.
    • This study provides evidence for improved clinical outcomes with the Savage repair technique.