A retrospective study of the stability of midface osteotomies in cleft lip and palate patients.
Relapse following midface osteotomies in cleft lip and palate patients was investigated in a retrospective study. The amount of surgical movement and subsequent relapse was measured using a computer aided digitisation programme with reference to the cranial base. The mean maxillary surgical advance was 5.09 mm horizontally and 5.70 mm vertically. After a mean follow up period of 22 months the mean relapse of the anterior maxilla was 0.90 mm (17%) horizontally and 1.55 mm (27.2%) vertically. Preliminary indications are that direct skeletal fixation of the maxilla by bone plates results in less relapse than when cranio-maxillary fixation is employed.
Department of Oral and Maxillofacial Surgery, Queen Victoria Hospital, East Grinstead, West Sussex.
D M
DM
Adlam
C K
CK
Yau
P
P
Banks
D000328:Adult; D002508:Cephalometry / Q000379:methods; D002971:Cleft Lip / Q000601:surgery*; D002972:Cleft Palate / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008437:Maxilla / Q000033:anatomy & histology* / Q000254:growth & development / Q000601:surgery; D010027:Osteotomy / Q000379:methods*; D010865:Pilot Projects; D012008:Recurrence; D012189:Retrospective Studies; D012399:Rotation