3-dimensional position changes of periorbital structures after midface distraction osteogenesis / 中华整形外科杂志
Chinese Journal of Plastic Surgery
;
(6): 421-425, 2008.
Article
Dans Chinois
| WPRIM
| ID: wpr-325829
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the 3-D position changes of periorbital structures after midface distraction osteogenesis in patients with Crouzon syndrome.</p><p><b>METHODS</b>The CT data of 8 cases who had accepted the midface distraction osteogenesis following Le Fort III osteotomy were retrospectively analyzed. The patients were averagely 11.9 years old, and the CT was performed before and one year after operation. After 3-D image reconstruction, a right-hand coordinate system based on the preoperational Frankfurt Plane was then established. The pre- and post-operative positions of the superior orbit point (SOr), inferior orbit point (IOr), median orbit point (MOr), lateral orbit point (LOr), anterior ocularis point (AO), ocularis eyeball point (PO) and the four insertion ocularis rectus were documented and compared. The positions of these marked points in normal controls were also documented and compared with those in patients.</p><p><b>RESULTS</b>After midface distraction osteogenesis, the position of AO was not changed significantly on the y-axis and z-axis, but the distance between two AO points on x-axis was reduced by 3.40 mm; IOr moved averagely 12.24 mm on y-axis and 4.25 mm on z-axis, MOr moved averagely 10.11 mm on y-axis and 2.80 mm on z-axis, LOr moved averagely 9.86 mm on y-axis and 2.31 mm on z-axis. The Inferior Rectus attachment moved averagely 3.63 mm on y-axis and 2.98 mm on z-axis. No other significant change was observed on other marked points.</p><p><b>CONCLUSIONS</b>Midface distraction osteogenesis following Le Fort III osteotomy can significantly move the medial, lateral and inferior peri-orbital bone structure anteriorly and inferiorly. The eyeballs have no markedly sagittal position changes after distraction except slight medial, downwards movements and anterior-upwards rotations.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Orbite
/
Chirurgie générale
/
Imagerie diagnostique
/
Tomodensitométrie
/
Ostéotomie de Le Fort
/
Ostéogenèse par distraction
/
Imagerie tridimensionnelle
/
Os de la face
/
Méthodes
Type d'étude:
Etude diagnostique
Limites du sujet:
Adolescent
/
Enfant
/
Femelle
/
Humains
/
Mâle
langue:
Chinois
Texte intégral:
Chinese Journal of Plastic Surgery
Année:
2008
Type:
Article
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