2.5. Surgical procedures
All the patients were hospitalized one day before surgery, and the body
hair on the surgical area was removed using an electric clipper in the
morning of the operation. An enema was performed approximately six hours
before, and 1 g of cefazolin sodium was administered intravenously 30
minutes before the surgery in all patients. All the surgeries were
performed under spinal anesthesia. The patient was placed in a prone
jack-knife position. The intergluteal fold was separated by tape, and
the intergluteal cleft was exposed. The operation area was cleansed at
least twice using a polyvinyl iodine soaked gauze. Than a polyvinyl
iodine soaked gauze was placed into anal area to prevent the possible
contamination. The orifices were probed using a stylet, and diluted
methylene blue was injected to assess the resection area.