The technique of traumamyoplasty was introduced as a way toovercome the technical difficulties associated with pyloric exposure andmanipulation especially when using the Trans umbilical and laparoscopicapproaches.This study was conducted by the pediatric surgery department, CairoUniversity Pediatric Hospital, Cairo University.In the period between May 2005 and September 2006, 40 cases of IHPSwere reviewed in a prospective study 20 of them were operated upon by theopen traumamyoplasty technique and 20 were operated laparoscopically.In all cases evaluation was done by careful history taking, clinicalexamination and investigations in the form of abdominal ultrasound andbarium meal in cases where sonography was not conclusive.