This timely and practical book presents the state-of-the-art of unicompartmental knee arthroplasty exploring half a century of reflection, reluctance and research around this increasingly common technique. In the opening part readers will discover UKA history, controversies as well as standard and emerging indications. Moving forward they will understand the differences between several eligible implants as well as case-by-case guiding principles behind a correct implant choice. Insights into single stage and robotic surgery, rehabilitation, possible complications, return to play and the use of joint registries further complement the book. Written by an international panel of experts, who share best practices and high quality intra-operative pictures, the book will be an excellent resource for practicing knee surgeons, sports physicians, residents and fellows alike.