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South African Journal of Surgery
versión On-line ISSN 2078-5151
versión impresa ISSN 0038-2361
S. Afr. j. surg. vol.48 no.1 Cape Town feb. 2010
GENERAL SURGERY
Bilateral versus posterior injection of botulinum toxin in the internal anal sphincter for the treatment of acute anal fissure
Ibrahim Othman
M.D.; Department of General Surgery, Tanta University, Egypt
ABSTRACT
AIM: Comparison of bilateral versus posterior injection of botulinum toxin into the internal anal sphincter for treatment of acute anal fissure.
METHODS: Forty patients with acute anal fissure were randomly divided into two equal groups. Group 1 was treated by injecting 20 units of botulinum toxin into each side of the internal anal sphincter, and group 2 by injecting 25 units of botulinum toxin into the midline posteriorly.
RESULTS: The mean time to pain relief was 8.45 (standard deviation (SD) 7.41) days in group 1 and 7.20 (SD 7.19) days in group 2. Healing took place in a mean of 5.20 (SD 1.85) weeks in group 1 and 5.40 (SD 2.01) weeks in group 2. Fissures failed to heal in 2 patients in group 1 and 3 in group 2, and recurred in 4 patients in group 1 and 3 in group 2.
CONCLUSION: Botulinum toxin injection is effective in treating acute anal fissure. A single posterior injection is easier and less painful than bilateral injection, and is as effective in pain relief.
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