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
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)
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
Patients, primary care clinic at Lille University Hospital, single-center study
Cohort
Prospective
hip arthroplasty
Procedure/Surgeryresurfacing procedures (HRP), THA and Minihip-type neck-preserving total hip arthroplasty.
Comparing the restoration of femoral hip offset between hip resurfacing procedures (HRP), THA and Minihip-type neck-preserving total hip arthroplasty.
The primary endpoint will be the difference between the native femoral offset, measured on the healthy contralateral hip, and the postoperative femoral offset of the operated hip. The offset is the distance in millimeters between the axis of the femoral shaft and the center of the femoral head.
Compare the anatomical restoration of frontal and axial parameters between the 3 types of intervention (PTH, Minihip and RSA).
Difference between the contralateral healthy hip and the operated hip at 3 months post-op of the following parameters: * frontal parameters: CCD angle (in degrees), limb length, LLL discrepancy (vertical femoral offset in mm), femoral or prosthetic head diameter, acetabulum inclination on the healthy side and cup inclination on the operated side, head-neck ratio (ratio between the diameter of the neck and the head of the femur). * axial parameters: femoral or prosthetic neck version, acetabulum version on healthy side and cup version on operated side, total version (neck + acetabulum or cup).
Compare clinical outcomes and patient satisfaction between the 3 procedures (PTH, Minihip and RSA).
Variations between the pre-operative and post-operative 3-month and 1-year periods in the following clinical parameters: Oxford, Harris, PMA, Devane, UCLA, Forgotten Joint Score Hip (FJS hip), joint amplitudes, ILMI clinical estimate (in cm) \- Patient satisfaction: measured using a 4-item MCQ (dissatisfied, not very satisfied, satisfied, very satisfied) at 3 months (early recovery) and 1 year (definitive recovery).
Correlate restoration of hip femoral offset and patient functional outcome at 3 months.
Offset restoration, defined as the difference between the native femoral offset, measured on the healthy contralateral hip, and the postoperative femoral offset of the operated hip. \- Patient functional outcome, defined by the Oxford score.
Click on the lead sponsor to view all of their trials.
