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

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

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.

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