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[Biodegradable meniscus fixations: a comparative biomechanical study].

R Seil1, S Rupp, C Jurecka

  • 1Service de Chirurgie Orthopédique, Cliniques Universitaires de Sarre, 66421 Hombourg, Sarre, Allemagne. rseil@yahoo.com

Revue De Chirurgie Orthopedique Et Reparatrice De L'Appareil Moteur
|March 1, 2003
PubMed
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New meniscus fixation devices show potential but may fail under cyclic loading. Standard sutures generally offer higher failure loads, with stronger materials improving outcomes.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Sports Medicine

Background:

  • Biodegradable fixation devices are increasingly used for meniscus repair.
  • Limited biomechanical data exists for these novel implants.
  • Understanding implant performance under load is crucial for clinical success.

Purpose of the Study:

  • To biomechanically evaluate meniscus repairs using four fixation devices (Meniscus Arrow, Clearfix Meniscal Screw, Meniscal Dart, BioStinger).
  • To compare the performance of these devices against standard suture techniques under cyclic and maximum loading.
  • To analyze failure modes and loads of different fixation methods.

Main Methods:

  • Eighty meniscus repairs were performed on porcine menisci.
  • Biomechanical testing included cyclic and maximum load analysis.

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  • Evaluated parameters were loosening, failure count, failure modes, and failure loads.

    • Main Results:

    • 25% of fixation devices failed during cyclic loading, with meniscal gapping observed early.
    • Failure loads varied among devices, with sutures generally showing higher strength than most fixation devices.
    • Stronger suture materials (PDS 0) significantly increased failure loads.

    Conclusions:

    • Meniscal fixation devices can fail under repetitive loading, leading to gapping.
    • Failure modes appear device-specific.
    • Sutures, particularly stronger materials, demonstrate superior biomechanical strength compared to tested bioabsorbable devices.