Knee flexion after total knee arthroplasty.
OBJECTIVE
To identify factors related to knee flexion after total knee arthroplasty in a Chinese population.


METHODS
Records of 242 total knee arthroplasties were retrospectively reviewed. The parameters evaluated were age, gender, diagnosis, preoperative knee flexion and extension, preoperative flexion arc, tibiofemoral angle, Knee Society knee score and functional score, and implant design.


RESULTS
Advanced age, female gender, and good preoperative flexion and flexion arc were related to better postoperative flexion. Postoperative flexion tended to migrate to the middle range despite different ranges of preoperative flexion. Preoperative tibiofemoral malalignment had no significant effect on postoperative flexion.


CONCLUSIONS
Contemporary designs of posterior stabilised prostheses with right and left femoral components were superior to older designs.
Li
P H
PH
Department of Orthopaedics and Traumatology, Yan Chai Hospital, Hong Kong. lipanghei@yahoo.com.hk
Wong
Y C
YC
Wai
Y L
YL
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D002681:China; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000503:physiopathology / Q000601:surgery*; D011184:Postoperative Period; D016059:Range of Motion, Articular / Q000502:physiology*; D012189:Retrospective Studies; D016896:Treatment Outcome