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Kaplan-Meier survival curve for the knee arthroplasty in obese and non-obese groups. Reproduced with permission and copyright of the British Editorial Society of Bone and Joint Surgery [Jackson MP, Sexton SA, Walter WL, et al.: The impact of obesity on the mid-term outcome of cementless total knee replacement. J Bone Joint Surg Br 91(8):1044–8, 2009]
