Total Hip Replacement Complications Radiology

It is a commonly performed procedure usually with very good results and return to function. This overview focusses on the normal findings and complications of cemented versus non cemented hip arthroplasties. Total hip arthroplasty tha or total hip replacement thr is an orthopedic procedure that involves the surgical excision of the femoral head and cartilage of the acetabulum and replacement of the joint with articulating femoral and acetabular components.

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Complications are many and can occur at various time intervals following the initial surgery.

Total hip replacement complications radiology.

Radiography is the primary imaging method for the evaluation of total hip arthroplasty. Features of loosening that can be seen on radiographs are shown in table 30 7. Late aseptic loosening is the most common reason for implant failure. The mean revision rate for total hip arthroplasty tha based on national joint replacement registry datasets from six countries finland sweden norway denmark new zealand and australia is 1 29 revisions per 100 observed component years.

The imaging assessment is done primarily with radiographs 28 30 but the same basic principles of assessing and measuring the position of the implant can be applied to ct scans. White lm 1 kim jk mehta m merchant n schweitzer me morrison wb hutchison cr gross ae. Component loosening may be secondary to infection or to a reaction to particulate debris usually small polyethylene liner wear particles. Interactive cases are presented in the menubar to test your knowledge on hipprostheses.

Total hip arthroplasty tha is among the most successful procedures for relieving pain and improving function in the arthritic hip the reported incidence of complications ranges from 6 5 7 6 radiologists must be knowledgeable of the diverse imaging appearances of these complications understand the advantage and limitation of each imaging modality and provide cost effective evaluation. This revision rate corresponds to a survival rate of 93 6 after 5 years and 87 1 after 10 years. Evaluation of periprosthetic soft tissue. In total hip replacement the femoral head and stem and the acetabular cup must all be well positioned.

Magnetic resonance imaging after total hip arthroplasty. Considered to be the most common indication for revision surgery 1 2 4. 1 dept of medical imaging mount sinai hospital and the university health network university of toronto ontario canada. Potter hg nestor bj sofka cm ho st peters le salvati ea.

Complications of total hip arthroplasty. Abductor tendons and muscles assessed at mr imaging after total hip arthroplasty in asymptomatic and symptomatic patients. Complications of total hip replacement loosening. Complications of total hip arthroplasty are common and it is essential for the radiologist to be aware of them in the assessment of radiographs of total hip replacements.

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