Residual posterior femoral condyle osteophyte affects the flexion range after total knee replacement.
We followed up 92 patients with total knee replacement and a pre-operative knee flexion of at least 90 degrees . The patients were followed up regularly at 3 months, 6 months and 1 year. The outcome measured was the amount of maximum passive knee flexion at the end of 1 year after replacement. The potential factors affecting the final flexion range were investigated. After regression analysis, apart from pre-operative knee flexion (p<0.001), the most significant independent surgical factors that predict the amount of post-operative flexion were presence of residual posterior femoral condyle osteophyte (p=0.046) and overstuffing the patella by more than 2 mm during resurfacing of the patella (p<0.001).
Yau
W P
WP
Department of Orthopaedic Surgery, Queen Mary Hospital, University of Hong Kong, 102, Pokfulam Road, Hong Kong, Hong Kong. peterwpy@hkucc.hku.hk
Chiu
K Y
KY
Tang
W M
WM
Ng
T P
TP
D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000473:pathology*; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery*; D007720:Knee Prosthesis; D008297:Male; D010149:Postoperative Pain / Q000209:etiology; D011859:Radiography; D016059:Range of Motion, Articular; D012044:Regression Analysis