Separation of ischiopagus tetrapus conjoined twins in the Sultanate of Oman.

Premature male ischiopagus tetrapus twins weighing 2.2 kg were born unexpectedly. They required initial ventilation for respiratory distress syndrome and an emergency laparotomy for intestinal obstruction at 10 days of age. At 8 months of age, formal separation was carried out. Primary skin closure was possible without the use of any tissue expander. Anaesthesia was supplemented with continuous intra- and post-operative epidural analgesia, with great benefit. Both twins are alive and well 18 months after surgery. Details of the anatomical findings and preparation for surgery are discussed.