There was no significant difference between groups for the secondary outcomes of mean pain scores ( 4.9 2.6 vs 4.8 2.6 , respectively ; P = .92 ) or analgesic requirements ( continuous morphine infusion [ P = .928 ] , boluses of IV morphine [ P = .82 ] , acetaminophen [ P = .34 ] , ibuprofen [ P = .15 ] , naproxen [ P = .10 ] ) .