Alexis Retractor in Total Hip Arthroplasty

February 3, 2026 updated by: Victor Hugo Hernandez, University of Miami

Wound Healing Outcomes With and Without the Alexis Wound Retractor in Direct Anterior Approach Total Hip Arthroplasty

To determine if there is a difference in wound healing and surgical site infection (SSI) rates using the Alexis wound retractor vs. not using it in longitudinal direct anterior approach total hip arthroplasty.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
202

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Florida
      • Miami, Florida, United States, 33125
        • University of Miami
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients undergoing primary unilateral longitudinal direct anterior approach total hip arthroplasty
  • Patients undergoing primary total hip arthroplasty

Exclusion Criteria:

  • Patients with history of prior open surgery on the affected hip
  • Patients with history of prior total hip arthroplasty on the contralateral hip
  • Patients with allergies or absolute contraindication to standardized drugs administered within the University of Miami protocol for total hip replacement

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Alexis Retractor
Subjects in this arm will undergo surgery using the Alexis wound retractor.
Device: Alexis wound retractor
A surgical device used to retract tissue during procedures, designed to reduce wound trauma and improve healing
Active Comparator: Non-Alexis Retractor
Subjects in this arm will undergo surgery using a standard retractor that does not include the Alexis device.
Device: Standard wound retractor
A conventional surgical retractor used during procedures without the features of the Alexis device

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Days to Identification of Delayed Wound Healing
Time Frame: Up to 14 days
Delayed wound healing is defined as the presence of one or more of the following clinical signs: drainage from wound, wound dehiscence, and superficial surgical site infection. Assessment is performed by clinical examination and documentation in the postoperative period. The outcome is measured in number of days from surgery to identification of delayed healing
Up to 14 days
Patient satisfaction with scaring as measured by Patient Scar Assessment Scale
Time Frame: Up to 12 months
Using the Patient Scar Assessment Scale, which is a validated plastic surgery tool for evaluating scars from the patient's perspective. Measured with a scale from 0 to 10, higher score indicates less satisfaction.
Up to 12 months
Scar cosmesis as measured by Observer Scar Assessment Scale
Time Frame: Up to 12 months
Using the Observer Scar Assessment Scale, which is a validated plastic surgery tool for evaluating scars from the observer perspective. Measured with a scale from 0 to 10, higher score indicates worse scar cosmesis.
Up to 12 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Participants Reporting Lateral Femoral Cutaneous Nerve (LFCN) Symptoms
Time Frame: Up to 6 months
LFCN symptoms are defined as paresthesias or dysesthesias in the anterior thigh distal to the surgical site. Symptoms are assessed through participant self-report and clinical documentation.
Up to 6 months
Hip Disability and Osteoarthritis Outcome Score (HOOS) - Patient-Reported Outcome
Time Frame: Up to 12 months
Assessed using the HOOS, a validated instrument for evaluating hip-related disability and osteoarthritis symptoms from the patient's perspective. Scores range from 0 to 28, with higher scores indicating worse patient-reported outcomes.
Up to 12 months
Number of Intraoperative fractures
Time Frame: Up to 3 hours (duration of surgery)
Intraoperative complications will be assessed by counting the number of fractures occurring during the surgical procedure; fractures are identified by the operating surgeon and confirmed via intraoperative imaging or direct visualization.
Up to 3 hours (duration of surgery)
Length of surgery
Time Frame: Up to 3 hours
Duration of the surgical procedure measured in minutes, from initial incision to closure.
Up to 3 hours
Number of Postoperative Complications
Time Frame: Up to 90 days
Measured by the number of complications including, but not limited to, periprosthetic joint infection (PJI), prosthetic hip dislocation, periprosthetic fracture, implant failure requiring revision surgery. Events are identified through clinical evaluation and documentation.
Up to 90 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Miami

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Victor H Hernandez, MD, MSc, University of Miami Department of Orthopaedics

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 1, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 15, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 15, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 20, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 5, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 3, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 20251013

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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