Comparison of controlled-intermittent anal dilatation and lateral internal sphincterotomy in the treatment of chronic anal fissures: a prospective, randomized study.

Aim: The results of controlled-intermittent anal dilatation (CIAD) or lateral internal sphincterotomy (LIS) in the treatment of chronic anal fissures are presented.

Material And Methods: Forty patients who were randomized to two groups underwent CIAD or a LIS. The pre- and post-operative mean anal canal resting pressures (MACRPs) and symptoms were recorded and the results were compared.