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Clin Orthop Relat Res. 2009 Sep;467(9):2297-304. doi: 10.1007/s11999-009-0906-7. Epub 2009 Jun 6.

Survival of the cementless Spotorno stem in the second decade.

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  • 1Stiftung Orthopädische Universitätsklinik Heidelberg, Schlierbacher Landstrasse 200a, 69118, Heidelberg, Germany. peter.aldinger@ok.uni-heidelberg.de

Abstract

High survival rates have been reported for the uncemented CLS Spotorno stem up to 10 years. To confirm survival at longer followup we report the minimum 15-year (mean, 17 years; range, 15-20 years) for 257 hips using this stem. We retrospectively evaluated the clinical and radiographic results of all 326 patients (354 THAs) operated between 1985 and 1989. The patients had a mean age of 57 years using an uncemented grit-blasted, tapered titanium femoral stem. Eighty-six patients (89 hips) died and eight patients (eight hips) were lost to followup, leaving 240 patients (257 hips) for evaluation. The femoral component was revised in 35 hips: eight for infection, nine for periprosthetic fracture, one for traumatic loosening, and 17 for aseptic loosening. Survival of the stem was 88% at 17 years (95% confidence interval, 84%-92%), and survival with femoral revision for aseptic loosening as an end point was 94% (95% confidence interval, 91%-97%). The median Harris hip score at followup was 80 points. No thigh pain was reported. Small osteolytic lesions (< 1 cm(2)) were found in the proximal Gruen zones (1 or/and 7) in 28 hips (15%). No distal femoral osteolysis was found. The long-term survival with this type of femoral component remains high in the second decade.

PMID:
19504161
PMCID:
PMC2866918
DOI:
10.1007/s11999-009-0906-7
[PubMed - indexed for MEDLINE]
Free PMC Article
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