Total knee arthroplasty in patients with severe obesity provides value for money despite increased complications.

Aims: Access to total knee arthroplasty (TKA) is sometimes restricted for patients with severe obesity (BMI ≥ 40 kg/m). This study compares the cost per quality-adjusted life year (QALY) associated with TKA in patients with a BMI above and below 40 kg/m to examine whether this is supported.

Methods: This single-centre study compared 169 consecutive patients with severe obesity (BMI ≥ 40 kg/m) (mean age 65.