hi i have been looking aroud the net for new treatments for fissures and found something called gonyautoxin its supposed to work better than the botox here is the link i found its the results of a medical test in chile http://www.ncbi.nlm.nih.gov/pubmed/15812585 if you find more info or have had it used plz let me know

Have a look at this link on the forum for some conversation about this:
http://anal-fissure.org/t4812-gonyautoxin-injections-98-cure