[Management of complicated midface deficiencies with external distraction].

OBJECTIVE

To treat complicated midface deficiencies with external distraction device.

METHODS

Four patients (one with acquired midface hypoplasia, two with Crouzon syndrome and one with Parry Romberg) with severe midface deficiencies underwent external distraction osteogenesis. After Le Fort III or Le Fort III plus I osteotomies were performed, the external distraction devices were activated on the 7th postoperative day with a rate of 1 mm per day. The distraction devices were removed after consolidation for 3 months.

RESULTS

All patients completed the distraction treatment. The distraction distance ranged from 10 to 14 mm. The appearance of all patients was significantly improved.

CONCLUSIONS

External distraction osteogenesis provides an effectively treatment for patients with severe and complicated midface deficiencies.