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FAB Block vs. Placebo for Hip Arthroplasty Patients

NCT04301687 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 95

Last updated 2026-04-27

No results posted yet for this study

Summary

Hip arthroplasty surgery can be associated with significant pain. A regional anesthesia technique, the femoral articular branch block (FAB), has recently been proposed to collectively block terminal femoral and accessory obturator nerve branches to the hip joint with a single injection, theoretically blocking most of the innervation relevant to hip arthroscopy while sparing the main femoral nerve branches to the quadriceps muscles. The investigators aim to demonstrate the analgesic benefits of FAB. The investigators hypothesize that FAB will reduce opioid consumption and improve postoperative quality of recovery in patients having hip arthroplasty. This is a randomized, controlled, double-blind study and half the patients will be randomized to receive the femoral articular branch block and the other half of patients will be randomized to receive a placebo block. A comparison of pain will be made between both groups.

Conditions

  • Hip Arthroplasty
  • Anesthesia, Regional
  • Femoral Articular Branch Block

Interventions

PROCEDURE

Femoral Articular Branch Block

Slow injection (3mL aliquots) of local anesthetic solution (20ml of Ropivacaine 0.5%) into the fascia above the iliopsoas muscle (located in the groove between the two bony landmarks - (1)anterior inferior iliac crest and (2)iliopubic eminence).This is done by ultrasound guidance.

PROCEDURE

Placebo Block

Subcutaneous injection of 1ml normal sterile saline

Sponsors & Collaborators

  • Women's College Hospital

    lead OTHER

Principal Investigators

  • Richard Brull, MD · Women's College Hospital

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
85 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-12-31
Primary Completion
2027-12-31
Completion
2028-12-31

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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 NCT04301687 on ClinicalTrials.gov