Local Infiltration Analgesia with Ropivacaine Improves Postoperative Pain Control in Ankle Fracture Patients: A Retrospective Cohort Study

Table 1

Demographic data.

Variable	LIA + iPCA (n = 50)	iPCA (n = 39)	value
Age (y)^∗	44.1 ± 6.8	45.3 ± 7.3	0.426
Gender (M/F)^†	28/22	20/19	0.658
Surgery time (min)^∗	101.7 ± 25.1	95.4 ± 20.9	0.210
Incision length(cm)^∗	15.3 ± 7.2	16.7 ± 5.8	0.325
Number of fractures
Lateral malleolar fractures^†	7	3	0.437
Bimalleolar fractures^†	28	20
Trimalleolar fractures^†	15	16

^∗Values are expressed as means ± SD. ^†Values are given as the number of patients. values based on the independent t-test or Pearson chi-square test.