How different hip replacement techniques affect hip biomechanics after surgery
Official title: Comparison of the Restoration of Hip Biomechanical Parameters by CT Measurement Between the 3 Surgical Techniques: RSA/Minihip/THA
Run by University Hospital, Lille · NCT06272422 · Data updated 2026-11-12
This observational study tests whether three hip replacement methods (THA, Minihip neck-preserving THR, and hip resurfacing) change hip biomechanics as measured by EOS radiographs and CT scans before and after surgery in adults with Coxarthrosis.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 165 (estimated) |
| Sponsor | University Hospital, Lille Academic / other |
| Locations | 1 site (Lille) |
| Status | Recruiting |
| Started | May 27, 2024 |
| Main results expected | August 27, 2026 |
| Study ends | August 27, 2026 |
| Registry record updated | May 19, 2026 |
| Trial ID | NCT06272422 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults 18 years or older with Coxarthrosis scheduled for THA, Minihip, or hip resurfacing and with acceptable contralateral hip radiographs (Tönnis ≤1).
✕Probably not a fit
Individuals with conditions that affect biomechanical measurements or require different surgical approaches may not experience biomechanical benefits.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
The study analyzes hip biomechanical parameters using EOS radiographs before surgery and after surgery at 3 months, plus post-operative CT at 3 months and 1 year. Participants undergo one of three surgical techniques: standard total hip arthroplasty, Minihip neck-preserving THR, or hip resurfacing. Measurements include pre-operative EOS, post-operative EOS and CT, and clinical assessments at 3 months and 1 year. Inclusion requires adults with Coxarthrosis planned for one of the three procedures, with specific radiographic and consent criteria, while exclusions rule out conditions that could affect biomechanical measurements. The lead site is University Hospital, Lille, with no listed collaborators.
Why it matters
Potential benefit: If successful, the study could clarify which technique best preserves or improves hip biomechanics after replacement.
How similar studies have gone: Previous work has explored biomechanical outcomes after different hip replacement techniques, but direct comparative biomechanical data using EOS and CT is limited.
Who can join: the full rules
Show full inclusion / exclusion criteria
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.
Where it's running
-
chu de Lille
Lille, France Recruiting
Study contacts
- Study coordinator: Julien GIRARD, MD
- Email: julien.girard@chu-lille.fr
- Phone: +33 (0)3.20.44.68.28
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.