title: The patterns of limb length, height, weight and body mass index changes after total knee arthroplasty.
abstract: The objective of this retrospective review of 466 patients was to document changes in limb length, leg length discrepancy (LLD), height, weight, and body mass index (BMI) 1 year after TKA and the patterns of height, weight, and BMI during 5 years. To determine change patterns over 5 years, the data of 291 patients were analyzed and compared with those of age and gender-matched normal subjects. Limb length, height, and weight increased, BMI remained unchanged, and LLD decreased 1 year after TKA. The bilateral group had a greater height increase and lower rate of LLD. Preoperative mechanical tibiofemoral angle was related to limb length increase, and patients with a smaller preoperative BMI showed more weight gain. During the 5 years, weight and BMI at 1 year were maintained, but height diminished, while the healthy population showed a decreasing trend in weight.
authors: Joint Reconstruction Center, Seoul National University Bundang Hospital, Seongnam, Korea.
authors: Moon Jong
authors: MJ
authors: Chang
authors: Yeon Gwi
authors: YG
authors: Kang
authors: Chong Bum
authors: CB
authors: Chang
authors: Sang Cheol
authors: SC
authors: Seong
authors: Tae Kyun
authors: TK
authors: Kim
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D015992:Body Mass Index; D049628:Body Size; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D012189:Retrospective Studies
keywords: body mass index; height; leg length discrepancy; limb length; total knee arthroplasty; weight