84
Participants
Start Date
March 5, 2021
Primary Completion Date
December 23, 2021
Study Completion Date
December 25, 2021
handheld ultrasound-assisted technique
Ultrasound with 3D navigation function is used to determine the needle insertion point and the insertion angle.
conventional palpation-guided technique
The interspinous space is detected by palpation
Seoul National University Hospital, Seoul
Seoul National University Hospital
OTHER