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Journal of Bone and Joint Surgery - British Volume, Vol 71-B, Issue 2, 189-197
Copyright © 1989 by British Editorial Society of Bone and Joint Surgery

Articles

Wear characteristics of the canine acetabulum against different femoral prostheses

SD Cook, KA Thomas, and MA Kester

Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, LA 70112.

We studied cartilage degeneration in 45 canine acetabula after implantation of prostheses with articulating surfaces of low-temperature isotropic (LTI) pyrolytic carbon, cobalt-chromium-molybdenum alloy and titanium alloy for periods ranging from two weeks to 18 months. Gross specimens and histological sections were compared with the nonoperated (control) acetabulum of the same animal. Cartilage articulating with LTI pyrolytic carbon exhibited significantly lower levels of gross wear, fibrillation, eburnation, glycosaminoglycan loss, and subchondral bone change than with metallic surfaces. Survivorship analysis showed a 92% probability of survival for cartilage articulating with LTI pyrolytic carbon at 18 months, as compared to only a 20% probability of survival for cartilage articulating with either of the metallic alloys.




(c) British Editorial Society of Bone and Joint Surgery All Rights Reserved
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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General