Comparison of the Restoration of Hip Biomechanical Parameters by CT Measurement Between the 3 Surgical Techniques: RSA/Minihip/THA - Hip Replacement: 3D Planning
The study will analyze hip biomechanical parameters using EOS radiographic measurements pre- and post-operatively (3 months) and post-operatively (3 months) CT scans after total hip replacement (THR), neck-preserving THR of the Minihip type or hip resurfacing (HR). Clinical results will be assessed at 3 months and 1 year after surgery.

To this end, two types of examination are carried out, both of which are used in current practice:

Pre-operatively: EOS radiography
Post-operatively: EOS radiograph and CT scan

Inclusion (m-3; m-1) :

Patient information at pre-operative visit
Non-opposition of patient, family member or legal guardian, if applicable
Questionnaires and clinical examination (standard management)
EOS during anesthetic consultation

Follow-up visit (m+3):

- Post-operative follow-up consultation EOS and CT scan (1 week prior to visit) + questionnaire and clinical examination

Follow-up visit (m+12):

- Post-operative check-up, questionnaire and clinical examination
- EligibilityCriteria: Inclusion Criteria:  Male or female Age ≥ 18 years Planned surgery: total hip arthroplasty, Minihip or RSA Absence of osteoarthritis or osteoarthritis ≤ stage 1 (Tönnis classification) of contralateral hip (Radiographic analysis) Patient having given his/her non-opposition to participate in the study Patient with social insurance Patient willing to comply with all study procedures and duration  Exclusion Criteria:  Patient with comorbidity(ies) likely to affect biomechanical parameter measurements or surgical conditions: Anomalies or anatomical changes of the hip, pelvis or lumbar spine (history of fracture, protrusion, scoliosis, history of orthopedic surgery, dysplasia, torsion disorder) Established genetic disease affecting the musculoskeletal system Severe or morbid obesity Neuromuscular pathologies affecting the limb girdles Severe osteoporosis Bone location of primary or metastatic cancer (spine, pelvis or femur) - Inequality of lower limb length > 2 cm. Minors Protected adults Pregnant or breast-feeding women Administrative reasons: inability to receive informed information, inability to participate in the entire study, lack of social security coverage, refusal to participate. - HealthyVolunteers: No - Gender: All - MinimumAge: 18 Years - StdAgeList: Adult, Older Adult - StudyPopulation: Patients, primary care clinic at Lille University Hospital, single-center study - SamplingMethod: Probability Sample