Do you need to lose weight prior to TKA

Writing in Journal of Knee Surgery, 03/21/2013 Dr. Issa K et al. brings clarity to the question of whether Obesity affects the outcomes of Primary Total Knee Arthroplasty Replacement (TKR).

The group compared clinical and radiographic outcomes of primary total knee arthroplasty (TKA) in both obese and non obese patients and found no differences in the length of hospital stay for the two groups at early to mid–term follow–up. However the authors from the Center for Joint Preservation and Replacement, Sinai Hospital of Baltimore, Maryland USA and the Department of Orthopaedic Surgery, Beth Israel Medical Center, New York, USA encourage all patients to lose weight prior to their TKA.
Another study by Chin Tat Lim, MD in Singapore using outcome measures of TKR: Knee Society Score (KSS), Short Form 36 Health Survey (SF36) and Western Ontario and McMaster Universities Arthritis Index (WOMAC) outcomes have shown that although non-obese (according to BMI) patients achieved “superior” post-operative flexion and range of movement there is no difference is outcome for obese and non obese patietns at 2 years.
“Obesity does not negate good surgical outcome in total knee arthroplasty,” said lead study author

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