A review of 33 fistulograms in a four-year study is presented. Four types of communicating tracts have emerged: single (58%), branched (18%), fistulous abscess (15%) and compound (9%). This classification has formed the basis of selection of operative treatment in all the cases. Diminished lumbo-sacral angle was also found in most of the anal fistula cases and this establishes a possible association between the pathology of anal fistula and the low back syndrome.

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http://dx.doi.org/10.1016/s0009-9260(79)80035-5DOI Listing

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