Ganymed Robotics develops a novel solution of surgical navigation to assist surgeons during knee remplacement surgeries. The aim of this study is to train and validate this novel algorithm.

During knee replacement surgery, per-operative images of the patient's knee will be taken. These images will then be compared with the pre-operative CT-scan of the patient using the novel navigation algorithm. The algorithm will be validated based on its ability to correctly compare both modalities (pre-operative and per-operative images).

Inclusion Criteria:

• Adults patients who signed the ICF of the study
• Patients suffering from knee osteoarthritis requiring a total knee replacement surgery

Exclusion Criteria:

• Patient under the age 18
• Patient unable to consent to the study or refusing to participate
• Patient with history of knee replacement on the knee that will be operated again
• Patient unable to realize a pre-operative CT-scan
• Patient not covered by French Health insurance or equivalent.

The surgeons involved in the study will propose to all patients corresponding to the eligibility criteria to participate to the study during pre-surgery appointment.