Introduction -- History -- Basic Anatomy and Physiology -- Prenatal Diagnosis -- Neo-Natal Management -- Colostomy -- Imaging -- Bowel Preparation -- Perineal Fistula -- Bulbar Fistula -- Prostatic Fistula -- Bladder Neck Fistula -- No Fistula -- Minimally Invasive Approach -- Re-Operations on Male Patients -- Vestibular Fistula -- Cloacas -- Cloacal Exstrophy -- Bowel Management -- Operations to Administer Enemas -- Urologic Problems -- Hirschsprung's Disease -- Idiopathic Constipation -- Perianal Fistula -- Posterior Sagittal Approach for Other Conditions -- Rare, Complex Defects -- Associated Defects in General -- Future, Advances -- Long Term Follow-Up -- Sacrococcygeal Teratoms -- ARM in Developing Countries -- Hemorrhoids -- Polyps -- Angiodysplasia Gastro Rectal Heterotopia Rectal Bleeding.