Herniation of abdominal contents through the donor site in the ilium o
ccurred in 5% of a series of 59 bone grafts. Four patients had this co
ndition at a 7 year follow up, and 2 were repaired with synthetic mesh
. Age, gender obesity and surgical technique are important causative f
actors. Preventive measures are proposed which have been successful du
ring the past 3 years.