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J Arthroplasty. 2013 May;28(5):828-31. doi: 10.1016/j.arth.2012.09.017. Epub 2013 Mar 1.

Long-term durability of the CLS femoral prosthesis in patients with osteonecrosis of the femoral head.

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  • 1Department of Orthopedic Surgery, Daegu Woori Hospital, Daegu, Korea.

Abstract

Ninety-five hips with cementless wedge-shaped tapered CLS stem were evaluated with a mean duration of 12.7 years (range, 10.7-17.3 years). All patients were young and diagnosed with osteonecrosis of the femoral head. The Harris hip score was 92 at the latest follow-up. A subsidence greater than 3mm was found in 3 hips (3.2%). Focal femoral osteolysis was found in 12 hips (12.6%). Endosteal bone formation and bony pedestal were observed in 94 hips (98.9%) and in 26 hips (27.4%), respectively. With revision for stem loosening as the end point, the survivorship showed 98.9% (95% CI, range 96.9%-100%) at 13 years. Stem alignment and proximal femur morphology did not influence loosening of the stem (p>0.05).

Copyright © 2013 Elsevier Inc. All rights reserved.

PMID:
23454105
[PubMed - indexed for MEDLINE]
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