Post-Operative Spinal Block Duration and Pain Relief After Hip Replacement Surgery: Comparing Single-Shot Spinal Ropivacaine and Bupivacaine

This study aims to determine whether isobaric ropivacaine is more suitable than isobaric bupivacaine for spinal anesthesia in outpatient total hip arthroplasty (THA). The study will evaluate whether ropivacaine allows faster recovery of sensory and motor function while still providing adequate surgical anesthesia and postoperative pain control. Additional aims are to assess the effects of the anesthetic technique on same-day discharge rates, postoperative recovery, urinary retention, opioid consumption, and patient satisfaction after outpatient THA.

NCT Number	NCT07631091
Lead Sponsor	University of Turku Collaborators: Turku University Hospital
Conditions	Hip Osteoarthritis, Hip Arthroplasty Replacement, Postoperative Pain After Ambulatory Surgery
Enrollment	176 participants
Start Date	2026-06
Primary Completion	2027-12 (estimated)
Study Completion	2028-05 (estimated)
Updated on ClinicalTrials.gov	2026-06-05