Ambispective Multicentric Study Evaluating UKA With U-Knee/Uni-Kroma Implants

This clinical investigation was led as a post-market clinical follow-up study (post-market device development stage).The main objective of this study is to collect short- and medium-term clinical data on the unicondylar knee prosthesis U-Knee / Uni-Kroma, in order to evaluate the performance of these implants.

Inclusion Criteria: \- All patients using a U-Knee / Uni-Kroma unicompartmental knee prosthesis and benefiting from the social security affiliation scheme. Exclusion Criteria: * Patients who objected to participating in the study and the processing of their data * Patients unable to understand the surgeon's instructions to complete their questionnaires or perform postoperative follow-up * Patients who already have a unicompartmental prosthesis on the knee in question that need to be revised.