162
Participants
Start Date
February 1, 2018
Primary Completion Date
June 30, 2019
Study Completion Date
September 30, 2019
22-gauge needle
22-gauge Quincke needle used for epidural injection
25-gauge needle
25-gauge Quincke needle used for epidural injection
Yale University, New Haven
Rothman Institute Orthopaedics
OTHER
Yale University
OTHER