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The American Journal of Sports Medicine 28:883-887 (2000)
© 2000 American Orthopaedic Society for Sports Medicine

A Novel Suture Anchor of High-Density Collagen Compared With a Metallic Anchor

Results of a 12-Week Study in Sheep

John A. Harrison, MBiomedE, MBBS, Donald Wallace, MBBS, David Van Sickle, DVM, PhD, Thomas Martin, DVM, PhD, David H. Sonnabend, FRACS and William R. Walsh, PhD*

Orthopaedic Research Laboratories of Prince of Wales Hospital, Randwick, New South Wales, Australia

* Address correspondence and reprint requests to William R. Walsh, PhD, Orthopaedic Research Laboratories, Prince of Wales Hospital, Randwick, NSW, Australia 2031

We report the early mechanical properties and histologic findings of a high-density, type I collagen bone anchor. This new anchor was compared with a traditional metallic anchor in a sheep patellar tendon model. No difference in strength of the repair was noted between the two devices at any time point. The insertions on the repaired side approached the strength of the nonoperated side by 12 weeks. Histologic analysis showed that the collagen anchor integrated with the surrounding bone by 6 weeks, and there was little degradation at 12 weeks. The high-density collagen anchor supported tendon healing to bone comparable with that seen with a traditional metallic device, but it has the potential advantage of the anchor being incorporated into bone.




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Copyright © 2000 by the American Orthopaedic Society for Sports Medicine.