Botulinum toxin injection versus lateral internal sphincterotomy in the treatment of chronic anal fissure: a non-randomized controlled trial

Table 2 Comparisons of anal pressures before and after assigned treatment.

Maximal resting pressure (mmHg)				Maximal squeeze pressure (mmHg)
Groups	Before treatment	After treatment	P	Before treatment	After treatment	P
BT	101 ± 23	83 ± 24	<0.05	117 ± 62	76 ± 34	<0.01
LIS	104 ± 22	86 ± 15	<0.05	70 ± 27	61 ± 32	>0.05

BT = Botulinum toxin injection. LIS = Lateral internal sphincterotomy. p > 0.05 for the comparisons between the two groups (BT vs. LIS).

ISSN: 1471-230X