Gait after total hip replacement: direct anterior vs manual posterior vs robotic posterior
Official title: A Prospective, Single-Blinded, Partially Randomized Three-Cohort Study Comparing Manual Direct Anterior and Manual Posterior Approaches to a Non-Randomized Robotic Posterior Cohort for Total Hip Arthroplasty Using Gait Analysis
Run by Ochsner Health System · NCT07226973 · Data updated 2026-11-12
This study tests whether people having a total hip replacement for osteoarthritis walk and rise from chairs differently when surgeons use a direct anterior approach, a manual posterior approach, or a robotic-assisted posterior approach.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 48 (estimated) |
| Sponsor | Ochsner Health System Academic / other |
| Locations | 2 sites (Metairie, Louisiana and 1 other locations) |
| Status | Recruiting |
| Started | October 9, 2025 |
| Main results expected | November 15, 2027 |
| Study ends | November 15, 2027 |
| Registry record updated | November 12, 2025 |
| Trial ID | NCT07226973 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults over 18 with hip osteoarthritis scheduled for a first-time elective total hip replacement, with BMI under 35 and able to walk at least 150 feet unassisted, would be ideal candidates.
✕Probably not a fit
Patients with prior surgery on the affected hip, neurological conditions that affect gait, or medical contraindications to either approach would not be eligible and are unlikely to benefit from this comparison.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This single-center, three-arm interventional study compares short-term gait biomechanics and patient-reported outcomes after primary total hip arthroplasty performed by direct anterior approach (manual), posterior approach (manual), or robotic-assisted posterior approach. One surgeon randomizes their eligible patients between the manual direct anterior and manual posterior approaches, while a second surgeon performs robotic-assisted posterior procedures per routine practice. Blinded outcome assessors use a Vicon motion-capture system with force plates and surface EMG to measure gait and sit-to-stand mechanics before surgery and at 6 and 12 weeks after surgery. Standard patient-reported outcome instruments are collected to relate biomechanical findings to functional recovery and symptoms.
Why it matters
Potential benefit: If successful, the results could help identify which surgical approach leads to faster or better early walking and functional recovery after hip replacement.
How similar studies have gone: Previous studies have shown robotic assistance can improve implant positioning while comparisons of surgical approaches have produced mixed evidence on short-term gait advantages, so this trial addresses a partially tested but still uncertain area.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adults aged \>18 undergoing primary elective THA for osteoarthritis * BMI \<35 * Ability to walk unassisted (cane, walker, wheelchair, ect) for \> 150 feet preoperatively Exclusion Criteria: * Previous hip surgery on the affected side * Neurological disorders affecting gait * Contraindication to either DAA or PA
Where it's running
-
Ochsner Health Center - Elmwood
Metairie, Louisiana, United States Recruiting -
Ochsner Medical Center
New Orleans, Louisiana, United States Recruiting
Study contacts
- Principal investigator: George Chimento, MD — Ochsner Health System
- Study coordinator: George Chimento, MD
- Email: gchimento@ochsner.org
- Phone: 504-736-4800
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Choose to Move Replacement Ready for OA patients waiting for hip or knee replacement
This program tests a tailored, online version of a 3-month activity and social-connection plan for older adults with hip or knee osteoarthritis who are waiting for joint replacement surgery to see if it improves physical activity and health while they wait.
-
Tipmed™ Primary Hip Prosthesis: 24-Month Post-Market Follow-Up in Adults
This PMCF study tests the safety and 24‑month performance of the Tipmed hip prosthesis in adults undergoing primary hip replacement.
-
PENG nerve block with or without pulsed radiofrequency for chronic hip osteoarthritis pain
The study will try adding pulsed radiofrequency to a PENG nerve block to see if it reduces pain for longer in people with chronic hip osteoarthritis who still have significant pain despite conservative treatment.
-
Virtual reality versus traditional relaxation to ease pain and improve sleep after hip or knee replacement
This will test whether relaxation using virtual reality or traditional relaxation works better to reduce pain and improve sleep in adults after hip or knee replacement.
-
Herbal combination (Boswellia, turmeric, grape extract) for hip or knee osteoarthritis
This study will test whether a daily herbal supplement containing Boswellia serrata, turmeric (curcumin), and grape extract (Vitis vinifera) reduces pain and improves function in adults with hip or knee osteoarthritis.
-
Platelet-rich plasma injections for joint and tendon problems
This project will test whether platelet-rich plasma (PRP) injections help people with osteoarthritis and other musculoskeletal conditions reduce pain and improve function over one year.
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.