Comparison of Ultrasound-guided Intraarticular Hip Injections With and Without Prior Local Anesthesia

Study Overview
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Brief Summary
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In this single-center randomized controlled trial, subjects undergoing a first-time ultrasound-guided unilateral intraarticular hip injection will be randomized into one of two groups: hip injection with prior local anesthesia (With LA) or hip injection without prior local anesthesia (Without LA). Visual analog scale (VAS) pain scores (0-100) will be collected after the local anesthesia injection (With LA group) and intraarticular hip injection (both groups). The primary outcome measure for comparison between the two groups will be VAS score for the intraarticular hip injection.

Official Title
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Comparison of Ultrasound-guided Intraarticular Hip Injections With and Without Prior Local Anesthesia: a Randomized Controlled Trial

Conditions
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Hip Pain

Intervention / Treatment
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* Procedure: Ultrasound guided injection


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patients undergoing a first-time ultrasound-guided unilateral intraarticular hip injection Subjects must be fluent in English Subject must be able to consent for themselves and mark pain levels on a visual analog scale. Exclusion Criteria: previous intraarticular hip injection (to remove bias from prior injection experiences) prior surgery on the hip to be injected use of opioid medication on the day of or day before the procedure diabetes mellitus body mass index (BMI) greater than 40

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Hip injection with prior local anesthesia<br> | Procedure: Ultrasound guided injection<br>* All intraarticular hip injections will be performed under real-time ultrasound guidance using a GE LOGIQ P9 ultrasound machine with a C1-5-RS 1-5 MHz curvilinear transducer (GE Healthcare, Chicago, IL, USA). For the procedure, patients will be placed in a supine position. The curvilinear transducer and ultrasound machine will be used to visualize the anterior aspect of the hip joint in a sagittal oblique plane. Sterile technique will be used to perform the procedure.<br>|
| Active Comparator: Hip injection without prior local anesthesia<br> | Procedure: Ultrasound guided injection<br>* All intraarticular hip injections will be performed under real-time ultrasound guidance using a GE LOGIQ P9 ultrasound machine with a C1-5-RS 1-5 MHz curvilinear transducer (GE Healthcare, Chicago, IL, USA). For the procedure, patients will be placed in a supine position. The curvilinear transducer and ultrasound machine will be used to visualize the anterior aspect of the hip joint in a sagittal oblique plane. Sterile technique will be used to perform the procedure.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| mean pain score | A visual analog pain score will be collected. The scale of the score is 0-100 with 100 indicating more pain. | baseline |