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Suture anchors--update 1999.

F A Barber1, M A Herbert

  • 1Plano Orthopedic and Sports Medicine Center, Texas 75093, USA.

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
|October 19, 1999
PubMed
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New suture anchors were tested for pullout strength in porcine femurs. Biodegradable anchors showed comparable strength to others, with screw anchors generally performing best.

Area of Science:

  • Orthopedic biomechanics
  • Biomaterials science

Background:

  • Suture anchors are crucial for soft tissue reattachment in orthopedic surgery.
  • Continuous innovation introduces new anchor designs with varying materials and geometries.

Purpose of the Study:

  • To evaluate the biomechanical performance of 25 new suture anchors.
  • To compare their pullout strength, failure modes, and physical characteristics.

Main Methods:

  • Established protocol using fresh porcine femurs.
  • Testing in diaphyseal cortex, metaphyseal cortex, and cancellous trough.
  • Tensile load applied at 12.5 mm/sec until failure using an Instron 1321.

Main Results:

  • Failure strength, mode, and physical dimensions were recorded for each anchor.

Related Experiment Videos

  • Screw anchors generally exhibited higher pullout strength.
  • New biodegradable anchors (poly L-lactic acid) demonstrated comparable strength to their class.

    • Conclusions:

    • New suture anchors exhibit varied biomechanical properties.
    • Biodegradable anchors are a growing trend with competitive performance.
    • All tested anchors exceeded the strength of the sutures they accommodate.