There were no significant differences in the pain scores between groups at 24h ( 95 % CI 1.36-0 .133 , p = 0.237 ) , 48h ( 95 % CI 0.689-0 .465 , p = 0.702 ) and 72h ( 95 % CI -0.631 to 0.223 , p = 0.347 ) .