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Subsidence in Collarless Corail Hip Replacement.

Veenesh Selvaratnam¹, Vishwanath Shetty¹, Vishal Sahni¹

¹Southport & Ormskirk NHS Hospital Trust, Liverpool, L1 8LP, UK.

The Open Orthopaedics Journal

|June 13, 2015

Summary

This summary is machine-generated.

Subsidence occurs in collarless Corail hip replacement (CCHR) within the first six weeks and up to six months post-surgery. This hip implant subsidence does not progress further by one year, with one case requiring revision surgery.

Keywords:

Collarless stem corail stem femoral stem subsidence uncemented THR uncemented stem

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Area of Science:

Orthopedic surgery
Biomedical engineering
Radiology

Background:

Hip replacement surgery is a common procedure for treating severe hip joint damage.
Collarless hip replacement designs aim to improve bone integration and reduce stress shielding.
Understanding implant subsidence is crucial for long-term hip replacement success.

Purpose of the Study:

To evaluate the occurrence and extent of subsidence in collarless Corail hip replacement (CCHR).
To determine the timing of subsidence progression in CCHR implants.
To identify potential complications associated with CCHR subsidence.

Main Methods:

Retrospective analysis of case notes and radiographs from 68 patients who underwent CCHR.
Measurement of implant subsidence at 6 weeks, 6 months, and 1 year post-operation.
Comparison of serial radiographs to assess subsidence progression.

Main Results:

Subsidence was observed in CCHR patients, primarily within the first 6 weeks post-surgery.
Further minor subsidence occurred in some patients up to 6 months post-op.
No additional subsidence was noted at the 1-year follow-up.
One patient (1.5%) experienced symptomatic subsidence (29mm) requiring revision surgery at 6 months.

Conclusions:

Subsidence is a phenomenon that occurs in collarless Corail hip replacement.
The majority of subsidence happens early, within the first 6 weeks, with limited progression up to 6 months.
CCHR implants demonstrate stable positioning by 1 year post-surgery in most cases.