Medical Imaging of the Musculoskeletal System Before and After Surgery for the Generation of Customized Biomechanical Models

While there are multiple surgical options for the treatment of a specific orthopaedic pathology, the patient is most often operated on according to the preferred method used within a team and not necessarily according to the method that would optimize the functional result. In addition, the variability of morphologies means that some patients, due to their anatomical characteristics, cannot benefit from an intervention that is necessary (incorrectly sized implant, unsuitable equipment). As the orthopaedic surgical procedure is definitive, the investigators believe that it may be useful to perform surgical simulations on a digital clone before performing on the real patient. This would be relevant for the patient, the caregiver, but also the community, as many surgical reopenings or treatment failures can be attributed to the difficulty of properly planning surgery for a functional objective in the long term.

This is a Retrospective study based on patient's record and medical imaging files.

50 patients For 3D medical imaging, the data will be obtained from the examinations performed by the patient before and after his surgery, they will be anonymized. The investigators will use the so-called "DICOM" sequences allowing the reconstruction of 3D models The personal data collected will be taken from the Surgical Report and the pre-surgical check-up (age, sex, height, weight) The patient identifier will be assigned for each subject with the centre number, initials (Surname / First name of the patient) and its inclusion number per centre.

Personal data will be obtained from the department's computerized or paper patient file Medical imaging data will be anonymized by the medical imaging department staff who will be assigned the patient identifier.

The database will be centralized and hosted on a laboratory computer on an encrypted and password-protected session.