Woman of 48 years old with a prior history of ACL reconstruction 30 years ago. She is an active patient and is now limited by medial tibiofemoral, and patellofemoral osteoarthritis confirmed on X-rays and Arthro-CT scan (A). Physical examination found no anterior laxity and no pain in the lateral compartment. Patellofemoral and medial unicompartmental knee arthroplasty were performed simultaneously with robotic assistance (B). The patient was very satisfied at 2 years follow-up with no residual pain and returned to a normal life.