This report describes the use of a new implantable device for distraction osteogenesis of the maxilla in treatment of midface hypoplasia seen in craniofacial syndromes. The technique of distraction osteogenesis is a recent advance in plastic surgery for treatment of bone growth disorders. The device is totally implantable except for the activating pin and can provide up to 30 mm of total advancement. We will describe our surgical technique and distraction protocol, illustrated by a case report of the device successfully used in a child with Crouzon syndrome.