The Journal of Bone and Joint Surgery, Vol 66, Issue 4 518-528, Copyright © 1984 by Journal of Bone and Joint Surgery, Inc
The Indiana conservative (surface-replacement) hip arthroplasty
WN Capello, GW Misamore and TM Trancik
We reviewed the clinical results of the Indiana conservative hip
arthroplasty in 116 hips with a two to seven-year follow-up. There were
seventeen failures (14.6 per cent). The rate of non-traumatic loosening was
10 per cent and the failure rate for patients with inflammatory arthritis
was 33 per cent. No infections, dislocations, subluxations, pulmonary
emboli, or deaths were associated with the procedure. For forty-two hips
with a successful result and a minimum follow-up of three years, the
radiographs were analyzed. Factors that were found to have a high
correlation with success of the arthroplasty were preservation of the
acetabular subchondral bone, complete coverage of the acetabular component,
and selection of the appropriate sizes of femoral and acetabular
components. Radiolucency was not found to be a reliable diagnostic sign of,
or prelude to, symptomatic loosening of the prosthetic implant.