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Related Experiment Videos

Two modified techniques for flexor tendon repair.

E Raposio1, A Cella, P Barabino

  • 1Department of Plastic and Reconstructive Surgery, National Institute for Cancer Research, University of Genova, Italy.

Plastic and Reconstructive Surgery
|May 14, 1999
PubMed
Summary

Two new digital flexor tendon repair techniques, the wrap core suture and H-shaped splint, significantly improve biomechanical strength compared to the Kessler repair. These methods enhance resistance to gap formation and failure in tendon repairs.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Hand Surgery

Background:

  • Digital flexor tendon injuries require robust repair techniques.
  • Conventional Kessler repair has limitations in resisting gap formation and failure.
  • Enhancing biomechanical properties of tendon repairs is crucial for patient outcomes.

Purpose of the Study:

  • To introduce and evaluate two novel techniques for digital flexor tendon repair: wrap core suture and H-shaped splint.
  • To compare the biomechanical properties (gap formation and failure strength) of these new techniques against the conventional Kessler repair.
  • To determine if the new techniques offer superior resistance to gap formation and repair failure.

Main Methods:

  • An ex vivo study was conducted using 24 flexor digitorum profundus tendons.

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  • Tendons were repaired using the conventional Kessler technique (24 repairs), wrap core suture (12 repairs), and H-shaped splint (12 repairs).
  • Tensiometric properties, including gap formation strength and ultimate failure load, were measured for all repairs.

    • Main Results:

    • Both the wrap core suture and H-shaped splint demonstrated significantly higher strength than the conventional Kessler repair (p < 0.001).
    • The wrap core suture increased gap formation load by 22.6% and failure load by 33.8% compared to Kessler.
    • The H-shaped splint showed a 158.5% increase in gap formation load and a 333.1% increase in failure load versus Kessler.

    Conclusions:

    • The wrap core suture and H-shaped splint represent significant advancements in digital flexor tendon repair.
    • These novel techniques provide enhanced biomechanical stability, offering greater resistance to gap formation and failure.
    • The H-shaped splint, in particular, demonstrated substantially superior strength in ex vivo testing.