Elsebae 2007.

Methods	RCT
Participants	Patients with Chronic anal fissure
Interventions	Lateral internal sphincterotomy either to the dentate line or the apex of the fissure in 92 patients
Outcomes	Healing at 4 and 18 weeks. timing of continence assessment was uncertain
Notes	Among 61 women, 21 had anterior fissures, 6 had multiple fissure. Among 47 men, there were 6 with anterior fissures and 9 with multiple fissures.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	inadequate
Blinding of outcome assessment (detection bias) All outcomes	High risk	inadequate
Drop‐outs All outcomes	Low risk	zero