Back to search results

Study on Gait After Total Hip Replacement Surgery

This study is looking at how different types of total hip replacement surgery (total hip arthroplasty or THA) affect your walking. Researchers are comparing three surgical approaches: a direct anterior approach (manual), a posterior approach (manual), and a robotic-assisted posterior approach. They want to see how your walking speed, hip muscle strength, and specific muscle activity change after surgery. You might be able to join if you are an adult over 18, having your first hip replacement for osteoarthritis, can walk over 150 feet without help before surgery, and have a BMI under 35. The study is currently unclear about its status, but plans to enroll 48 participants.

Study design
This is a single-center study comparing three different surgical approaches for hip replacement. Some patients are randomly assigned to one of two manual approaches, while others receive a robotic-assisted approach. Researchers who assess your walking will not know which surgery you had.
What's involved
You would have assessments before surgery and then again at 6 and 12 weeks after surgery. These assessments involve analyzing your walking and sit-to-stand movements using special equipment, and completing questionnaires.
Compensation
Not stated in the trial record.
Follow-up
Your progress will be followed for 12 weeks after your surgery.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07226973

Gait After THA: Direct Anterior vs Manual Posterior vs Robotic Posterior

Recruiting
NAAges 18+InterventionalTreatment
Ochsner Health System
~48 participants
Updated 2025-11-12 on ClinicalTrials.gov
What's tested:Total hip arthroplasty via direct anterior approach (manual, non-robotic)Total hip arthroplasty via posterior approach (manual, non-robotic)Robotic-assisted total hip arthroplasty via posterior approach

At a glance

Recruiting sites
2 of 2 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Walking speed during level gait (m/s)
Measured over Change from baseline (pre-op) to 6 weeks and 12 weeks post-op.
+2 more outcomes measured

Conditions

Osteoarthritis (OA) of the Hip

Explore related trials

Osteoarthritis

Where it's being run

2 sites across 1 states
Louisiana2

Study leadership

  • George Chimento, MD · PRINCIPAL_INVESTIGATOR · Ochsner Health System

Who to contact

George Chimento, MD
[email protected]
504-736-4800
Email the study team

Opens a ready-to-send draft in your own email app — review before sending.

Do you actually qualify for this trial?

Add a private profile and we'll compare every criterion below against your situation — and tell you which ones are met, uncertain, or excluding.

Check eligibility for this trial ~2 min · HIPAA-protected · delete anytime
Eligibility criteria

Inclusion

Adults aged \>18 undergoing primary elective THA for osteoarthritis
BMI \<35
Ability to walk unassisted (cane, walker, wheelchair, ect) for \> 150 feet preoperatively

Exclusion

Previous hip surgery on the affected side
Neurological disorders affecting gait
Contraindication to either DAA or PA

What this trial measures

  • Walking speed during level gait (m/s)Change from baseline (pre-op) to 6 weeks and 12 weeks post-op.

    Mean self-selected walking speed measured over instrumented walkway during motion-capture trials.

  • Peak hip abduction moment during stance (Nm/kg)Change from baseline (pre-op) to 6 weeks and 12 weeks post-op.

    Maximum external hip abduction moment during stance, normalized to body mass.

  • EMG- Gluteus medius peak activation at initial contact/loading responseChange from baseline (pre-op) to 6 weeks and 12 weeks post-op.

    Peak normalized surface EMG amplitude of the operated-side gluteus medius measured during the initial contact/loading response of level walking. EMG is sampled synchronously with motion capture and force plates, band-pass filtered (\~20-450 Hz), rectified, and low-pass filtered (\~6 Hz) to form a linear envelope. Strides are time-normalized to 0-100% gait cycle; the peak is extracted within 0-10% of the gait cycle (heel strike through loading response). Amplitude is normalized to the participant's maximum voluntary isometric contraction (%MVIC). Participant-level values are the mean of valid trials at each visit.