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Erschienen in:
01.02.2015 | Hip Arthroplasty
Minimal invasive posterior total hip arthroplasty: are 6 weeks of hip precautions really necessary?
Erschienen in: Archives of Orthopaedic and Trauma Surgery | Ausgabe 2/2015
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Introduction
Postoperative hip dislocations have been reported in 0.5 to 10.6 % of patients after primary posterolateral total hip arthroplasty (THA). Hip precautions are currently recommended for 6 weeks postoperatively to reduce early dislocation and facilitate healing of the posterior soft tissue repair.
Materials and methods
To determine the impact of a modified 4-week precaution protocol on the dislocation rate, 698 consecutive patients (797 hips) operated by a single surgeon between September 2008 and December 2012 were retrospectively evaluated. All patients had a standard THA using a minimal invasive posterior approach with posterior soft tissue repair and 28–36-mm head size. 98.7 % of the patients were available for follow-up.
Results
There were eight (1 %) dislocations in 797 hips in the first 12 months after surgery with 4 weeks of hip precautions. The average time to dislocation was 7.5 weeks after surgery (range 1.0–16.9 weeks); two dislocations (25 %) took place in the first 4 weeks.
Conclusions
Shortening the time of posterolateral hip precautions from 6 to 4 weeks after surgery does not increase the risk of postoperative dislocation.