Detecting stem debonding in total hip arthroplasty.
In total hip arthroplasty, cemented femoral components combined with contemporary insertion techniques have an excellent track record of reliable long-term success. Certain cemented stem designs, however, have high failure rates. As osteolysis and bone destruction are rapid and progressive with certain designs, early detection of failure is imperative. We describe a case in which the common failure pattern of debonding is evident after radiographic evaluation with stress application. Although a single-leg stance was used in this case, a modified standing view might also be used.
McGrory
Brian J
BJ
Orthopaedic Associates of Portland, 33 Sewall St, Portland, ME 04104, USA. mjri@yahoo.com
Evans
Paul
P
Duffy
Gavan
G
D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D002484:Cementation; D005260:Female; D006621:Hip Joint / Q000000981:diagnostic imaging*; D006801:Humans; D011475:Prosthesis Failure; D011859:Radiography