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MRI as a problem-solving tool in unexplained failed total hip replacement following conventional assessment
Ciaran Johnston1, Jennifer Kerr, Stephanie Ford
1Department of Radiology, Cappagh National Orthopaedic Hospital, Finglas, Dublin 11, Ireland. ciaranjohnston@yahoo.co.uk
Skeletal Radiology
|July 10, 2007
Summary
Magnetic Resonance Imaging (MRI) is effective for diagnosing unexplained failed total hip replacements. This imaging technique identified new causes for prosthesis failure in over 50% of patients, guiding treatment decisions.
Area of Science:
- Orthopedic Surgery
- Radiology
- Medical Imaging
Background:
- Total hip replacement (THR) failure can be challenging to diagnose with conventional radiology.
- Unexplained THR failure necessitates advanced diagnostic tools for accurate problem-solving.
Purpose of the Study:
- To assess the utility of Magnetic Resonance Imaging (MRI) in diagnosing unexplained failed total hip replacements.
- To determine if MRI can identify causes of prosthesis failure missed by conventional radiological assessment.
Main Methods:
- Twenty-eight patients with unexplained failed THR underwent MRI using an optimized turbo-spin echo sequence.
- Musculoskeletal radiologists reviewed MRI findings, comparing them with surgical, interventional, or clinical follow-up data.
Main Results:
- MRI identified an unsuspected diagnosis in 15 out of 28 patients (over 50%).
- Minimally invasive image-guided intervention was performed in 8 of these 15 patients, avoiding revision THR.
- No cause for prosthesis failure was identified in 13 patients.
Conclusions:
- MRI is a valuable tool for evaluating patients with unexplained failed total hip replacements.
- MRI frequently reveals unsuspected diagnoses, enabling informed treatment strategies and potentially avoiding revision surgery.
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