Total Hip Replacement Complications Radiology
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Total hip replacement complications radiology. 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. Radiography is the primary imaging method for the evaluation of total hip arthroplasty. Late aseptic loosening is the most common reason for implant failure. This overview focusses on the normal findings and complications of cemented versus non cemented hip arthroplasties.
Complications of total hip replacement loosening. Component loosening may be secondary to infection or to a reaction to particulate debris usually small polyethylene liner wear particles. 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. 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.
Interactive cases are presented in the menubar to test your knowledge on hipprostheses. 1 dept of medical imaging mount sinai hospital and the university health network university of toronto ontario canada. Features of loosening that can be seen on radiographs are shown in table 30 7. Abductor tendons and muscles assessed at mr imaging after total hip arthroplasty in asymptomatic and symptomatic patients.
Considered to be the most common indication for revision surgery 1 2 4. In total hip replacement the femoral head and stem and the acetabular cup must all be well positioned. This revision rate corresponds to a survival rate of 93 6 after 5 years and 87 1 after 10 years. White lm 1 kim jk mehta m merchant n schweitzer me morrison wb hutchison cr gross ae.
Magnetic resonance imaging after total hip arthroplasty. Evaluation of periprosthetic soft tissue. 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. 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.
Complications Include Avascular Necrosis Of The Hip And Premature Closure Of The Phys Human Anatomy And Physiology Family Nurse Practitioner Emergency Medicine
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