Neonatal circumcision is most commonly performed using one of three techniques--the Mogen clamp, the Gomco clamp or the Plastibell device. With all three techniques, careful selection and preparation of patients is essential. Informed consent must be obtained from parents or guardians, based on an objective understanding of the medical and social implications of circumcision, including potential complications from the procedure. Measures for creating an aseptic field, anesthesia and positioning of the infant do not vary with the technique selected. Both the Mogen and Gomco clamps protect the glans while producing crush injury to the prepuce, which is then surgically removed. The Plastibell device induces necrotic tissue, which is sloughed off, along with the plastic shield, within a week or so. Although complications from neonatal circumcision are rare, hemorrhage, local infection, sepsis, meatal ulceration and poor cosmetic results have been reported.