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01-06-2004 | Original Paper

Prospective comparison of differences in bone mineral density adjacent to two biomechanically different types of cementless femoral stems

Authors: B. Zerahn, G. S. Lausten, I.-L. Kanstrup

Published in: International Orthopaedics | Issue 3/2004

Abstract

We compared the differences in bone mineral density (BMD) adjacent to two biomechanically different cementless femoral stems (Spotorno and Evolution-K). Measurements were performed within the first week after surgery and 3, 6, 12, and 24 months postoperatively in a prospective study of 31 patients with 37 total hip arthroplasties. A modified Harris hip score and a visual analogue score for patient satisfaction was used to evaluate the clinical outcome. For both stems, dual X-ray absorptiometry measurements revealed a decrease in BMD in Gruen zone 7. Patients with a Spotorno stem also had a significant decrease in BMD in zones 1 and 2. In patients with an Evolution-K stem, there was a positive correlation between the clinical outcome and BMD in Gruen zones 1 and 4. Our data suggest that periprosthetic bone loss is equal to if not less pronounced adjacent to the Evolution-K stem as compared to the Spotorno stem.

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Title: Prospective comparison of differences in bone mineral density adjacent to two biomechanically different types of cementless femoral stems
Authors: B. Zerahn
G. S. Lausten
I.-L. Kanstrup
Publication date: 01-06-2004
Publisher: Springer-Verlag
Published in: International Orthopaedics / Issue 3/2004
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI: https://doi.org/10.1007/s00264-003-0534-x

At a glance: The STEP trials

Springer Medicine

Prospective comparison of differences in bone mineral density adjacent to two biomechanically different types of cementless femoral stems

Abstract

At a glance: The STEP trials

Springer Medicine

Abstract

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