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International Orthopaedics

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01-04-2012 | Original Paper

The effects of different weight-bearing regimes on press-fit cup stability: a randomised study with five years of follow-up using radiostereometry

Authors: Olof Wolf, Per Mattsson, Jan Milbrink, Sune Larsson, Hans Mallmin

Published in: International Orthopaedics | Issue 4/2012

Abstract

Purpose

There is little evidence to support immediate weight bearing after uncemented total hip arthroplasty (THA).

Methods

Thirty-seven patients with unilateral osteoarthritis of the hip received a press-fit cup. Cup stability was assessed with radiostereometry (RSA) over five years. Patients were randomised to immediate full weight bearing, or partial weight bearing for three months.

Results

At five years, we found no difference in micromotion as assessed with radiostereometry. Numerically, there was more proximal translation and increased inclination with immediate weight bearing, but these values barely exceeded the precision limit for the method. Pooled data for the two groups revealed translations of 0.1-0.3 mm and rotations of 0.2-0.3° over the five year follow-up period.

Conclusions

We found no adverse effects of immediate weight bearing after THA in relation to stability of these press-fit cups. Early mobilisation might have other advantages.

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Title: The effects of different weight-bearing regimes on press-fit cup stability: a randomised study with five years of follow-up using radiostereometry
Authors: Olof Wolf
Per Mattsson
Jan Milbrink
Sune Larsson
Hans Mallmin
Publication date: 01-04-2012
Publisher: Springer-Verlag
Published in: International Orthopaedics / Issue 4/2012
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI: https://doi.org/10.1007/s00264-011-1413-5

Keynote webinar | Spotlight on medication adherence

Springer Medicine

The effects of different weight-bearing regimes on press-fit cup stability: a randomised study with five years of follow-up using radiostereometry

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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