AAOS2019: Intraoperative bupivicaine superior to placebo for reduction of pain in knee arthroscopy .
Do Local Anesthetic Arthroscopic Portal Injections Decrease Pain after Knee Arthroscopy
277 patients scheduled for knee arthroscopy were randomized analgesia via portal injection with either 20mL 0.5% bupivacaine, 20mL 0.25% bupivacaine, or 20mL normal saline. Follow up was conducted up to 2 weeks postoperatively. The primary outcomes of interest were pain (measured with VAS) and narcotic consumption. The result from this study found the high dose bupivacaine treatment to result in significantly favourable pain scores at 1 and 4 hours post-operation compared to placebo. The low dose group displayed significantly favourable pain scores at 4 hours compared to placebo. No differences in narcotic consumption were observed at 2 weeks.
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