TY - JOUR
T1 - Femoral component failure in the Oxford unicompartmental knee arthroplasty
T2 - A case report
AU - Argelo, Kirsten D S
AU - Burger, Mick A.
AU - Hoozemans, Marco J M
AU - Temmerman, Olivier P P
PY - 2014/12/11
Y1 - 2014/12/11
N2 - Introduction: The present case report describes a patient who presented with an early complication after a unicompartmental knee arthroplasty. It is not the first case in this subject but the unique aspect of this case report rests on the timing in which the failure occurred. Case presentation: A 64-year-old Caucasian man received a medial unicompartmental knee arthroplasty (Oxford® Partial Knee) due to isolated anteromedial osteoarthritis of his right knee. His initial recovery was good, however, after 3 months he presented with acute pain and a locked knee. Radiographs showed a complete loosening and migration of the femoral component. During revision surgery no clear explanation was found for failure of the femoral component. Conclusions: The most likely explanation for loosening is the combination of peak stresses on the posterior facet of the femoral components of a unicompartmental knee arthroplasty in a patient in a cross-legged knee position causing bone-cement or cement-implant interface failure. Further research is necessary in prosthetic designs and applications of the unicompartmental knee arthroplasty to determine the origin of this early complication.
AB - Introduction: The present case report describes a patient who presented with an early complication after a unicompartmental knee arthroplasty. It is not the first case in this subject but the unique aspect of this case report rests on the timing in which the failure occurred. Case presentation: A 64-year-old Caucasian man received a medial unicompartmental knee arthroplasty (Oxford® Partial Knee) due to isolated anteromedial osteoarthritis of his right knee. His initial recovery was good, however, after 3 months he presented with acute pain and a locked knee. Radiographs showed a complete loosening and migration of the femoral component. During revision surgery no clear explanation was found for failure of the femoral component. Conclusions: The most likely explanation for loosening is the combination of peak stresses on the posterior facet of the femoral components of a unicompartmental knee arthroplasty in a patient in a cross-legged knee position causing bone-cement or cement-implant interface failure. Further research is necessary in prosthetic designs and applications of the unicompartmental knee arthroplasty to determine the origin of this early complication.
KW - Complication
KW - Knee arthroplasty
KW - Unicompartmental knee arthroplasty
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U2 - 10.1186/1752-1947-8-419
DO - 10.1186/1752-1947-8-419
M3 - Article
C2 - 25495338
AN - SCOPUS:84924064552
SN - 1752-1947
VL - 8
JO - Journal of medical case reports
JF - Journal of medical case reports
IS - 1
M1 - 419
ER -