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With increasing use of total hip replacement in orthopedic surgery, it is becoming essential for the radiologist to familiarize himself with the normal as well as the abnormal appearance of prostheses used in this procedure. Several authors have examined the complications of total hip replacement with emphasis on problems which are associated with all aspects of the procedure.1,3,6,7,9 In a review of cases of total hip replacement using the Bechtol modification of Charnleys low-friction arthroplasty at the University of Missouri since November 1971, only those complications with radiographic findings have been included for discussion.
Radiographically illustrated complications of total hip replacement are: 1. dislocation; 2. disruption of the transplanted greater trochanter; 3. periarticular calcification and ossification or both; 4. protrusion of the acetabulum; 5. infection; 6. penetration of lateral femoral cortex; and 7. suboptimal acetabulum orientation.
It should be noted that not all of these complications are associated with clinical or physical disabilities.
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