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Alexis O-Ring and Charnley Retrievers and Its Effect on Contamination on Total Hip Arthroplasty

NCT07621250 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 144

Last updated 2026-06-02

No results posted yet for this study

Summary

Randomized, prospective, single-blind clinical trial comparing two static wound retractors - the Charnley retractor and the Alexis O-Ring retractor - in primary total hip arthroplasty (THA). The primary objective is to compare surgical site contamination rates between the two devices. Secondary objectives include comparison of incision length, surgical time, intraoperative skin lesions, and postoperative complications including periprosthetic joint infection. Patients will be randomized 1:1 to either retractor group. Surgical site contamination will be assessed through four intraoperative cultures taken at standardized timepoints. Follow-up will be conducted at 1 month postoperatively.

Conditions

  • Total Hip Arthroplasty (THA)

Interventions

DEVICE

Alexis O-Ring Wound Retractor

Circular polyurethane wound retractor (Applied Medical, Rancho Santa Margarita, CA, USA). A rigid deep ring is placed beneath the fascia lata, and the polyurethane cylinder is rolled around the outer ring to retract wound edges and create a physical barrier between the skin and the surgical field.

DEVICE

Charnley Retractor

Semi-rigid stainless steel ortostatic retractor consisting of a bow with two blades (one fixed, one adjustable). Placed around the incision at the level of the fascia lata to retract wound edges through elastic tension. Standard retractor currently used in total hip arthroplasty.

Sponsors & Collaborators

  • Hospital del Mar

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-04-20
Primary Completion
2025-05-24
Completion
2026-03-10

Countries

  • Spain

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07621250 on ClinicalTrials.gov