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

Part of paid clinical trials in Metairie, Louisiana.

Sponsor
Ochsner Health System
Study ID
NCT07226973
Status
Recruiting
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Conditions

  • Osteoarthritis (OA) of the Hip

Eligibility Criteria

Sex
ALL
Age
18 Years - N/A
Healthy Volunteers
Not accepted

Interventions

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

Study Details

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.

Key Dates

Start date
Oct 9, 2025
Status verified
Nov 2025
Primary completion
Nov 15, 2027
Completion
Nov 15, 2027

Study Design

Enrollment
48 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • Active Comparator: Manual Direct Anterior Approach (DAA)
    The DAA utilizes an internervous and intermuscular approach, preserving abductor and posterior soft tissues, and is associated with reduced dislocation rates and accelerated early recovery.⁶ However, it carries a steep learning curve and an elevated risk of lateral femoral cutaneous nerve neuropraxia.
  • Active Comparator: Manual Posterior Approach
    PA remains the most commonly used technique worldwide, offering extensile exposure and preserved abductor function, though its historical association with increased dislocation risk has necessitated meticulous capsular and soft-tissue repair.
  • Active Comparator: Robotic-Assisted Posterior Approach
    Robotic-assisted THA introduces computer-navigated precision into implant alignment and biomechanical restoration. Contemporary systems (e.g., MAKO) offer intraoperative haptic guidance and preoperative CT-based planning to improve component placement accuracy.

Primary Outcome Measure

Walking speed during level gait (m/s) [ Time Frame: Change from baseline (pre-op) to 6 weeks and 12 weeks post-op. ]

Central Contacts

Locations (2)

FacilityCityStateZIPSite coordinators
Ochsner Health Center - ElmwoodMetairieLouisiana70005
Miguel Jaramillo
[email protected]
504-703-8002
Ochsner Medical CenterNew OrleansLouisiana70121
Miguel Jaramillo
[email protected]
504-703-8002

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Ochsner Health Center - Elmwood· Metairie, LAOchsner Medical Center· New Orleans, LA

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