From: Botulinum toxin injection versus lateral internal sphincterotomy in the treatment of chronic anal fissure: a non-randomized controlled trial
Baseline characteristics
BT (n = 10)
LIS (n = 11)
Age (years)
41 ± 11
39 ± 10
Sex (female/male)
4/6
7/4
Symptom duration (months)
10 ± 6
11 ± 6
Maximal Resting Pressure (mmHg)
101 ± 23
104 ± 22
Maximal Squeeze Pressure (mmHg) †
70 ± 27
117 ± 62