NCT07226973

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

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

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 48 (estimated)
• Sponsor: Ochsner Health System · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to evaluate the gait biomechanics following THA on 3 groups of subjects undergoing DAA (manual) and PA (manual and robotic) surgical approaches.

Detailed description

Single-center, three-arm, partially randomized interventional study comparing gait biomechanics after primary total hip arthroplasty (THA) via (1) manual direct anterior approach (DAA), (2) manual posterior approach (PA), and (3) robotic-assisted posterior approach (rPA). One surgeon's patients are randomized to DAA vs PA; the second surgeon's patients receive rPA per routine practice. Outcomes assessors are blinded (motion-capture suit conceals dressings/scars). Gait and sit-to-stand analyses are performed pre-op and at 6 and 12 weeks post-op using a Vicon motion capture system with force plates and surface EMG. Patient-reported outcomes are collected with standard instruments. The trial evaluates short-term biomechanical recovery and patient-reported outcomes across approaches.

Conditions

• Osteoarthritis (OA) of the Hip

Interventions

Type	Name	Description
PROCEDURE	Total hip arthroplasty via direct anterior approach (manual, non-robotic)	Primary THA performed via a direct anterior approach without robotic assistance
PROCEDURE	Total hip arthroplasty via posterior approach (manual, non-robotic)	Primary THA performed via a posterior approach without robotic assistance
PROCEDURE	Robotic-assisted total hip arthroplasty via posterior approach	Primary THA via posterior approach using pre-op CT-based planning and intra-op robotic assistance

Timeline

• Start date: 2025-10-09
• Primary completion: 2027-11-15
• Completion: 2027-11-15
• First posted: 2025-11-12
• Last updated: 2025-11-12

Locations

2 sites across 1 country: United States