Fig. 4

BMI-linked leptin expression. a–h The leptin serum levels of the 52 patients were correlated to the BMI in dependency of the kind of performed arthroplasty and in dependency of the sex. The leptin expression levels correlated nicely to the BMI pre- and post-operatively. However, the effect was stronger in knee joint implantation than in hip joint implantation and was stronger in males when compared to females