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Journal of Bone and Joint Surgery - British Volume, Vol 72-B, Issue 1, 53-59
Copyright © 1990 by British Editorial Society of Bone and Joint Surgery

Articles

Cementless acetabular components

CA Engh, WL Griffin, and CL Marx

Anderson Orthopaedic Institute, Arlington, Virginia 22206.

Four hundred and fifteen patients with cementless acetabular components of either a smooth threaded (130) or porous surfaced (285) variety were compared for clinical symptoms and radiographic signs of component loosening. At a mean 4.8 year follow-up none of the patients with porous acetabular components had signs of component instability. At a mean 3.9 year follow-up 27 (21%) of the patients with a smooth threaded acetabular component showed radiographic signs of instability and 33 (25%) had clinical symptoms. The disappointing short-term results with these threaded cups in our hands have prompted us to abandon their use in favour of the porous surfaced hemispherical cups.


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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General