title: A new preoperative radiological assessment in LeFort I surgery: anterior nasal spine-sphenoidal rostrum.
abstract: OBJECTIVE
  The aim of this study is to assess the distance between the anterior nasal spine and the sphenoidal rostrum related to the LeFort I surgery in a Turkish population sample.
  
  
  METHODS
  We retrospectively reviewed multidetector computerized tomography (MDCT) scans of 209 patients (134 males and 75 females). The images were obtained on a 64-MDCT scanner. The imaging parameters were 0.5 × 64 mm slice thickness, 0.5/0.3 mm increment, 120 kV, 250 mAs, 0.5 sn rotation time, 0.641 pitch, and 512 matrix. The distance between the anterior nasal spine and the sphenoidal rostrum was assessed with the Vitrea 2 software program.
  
  
  RESULTS
  The study group consisted of 134 male (mean age 57.90 ± 5.86) and 75 female (mean age 54.84 ± 4.31) patients. The distance between the anterior nasal spine and the sphenoidal rostrum was ranging between 40.4 and 70.9 mm (average 58.3 ± 5.9) in males and 45.0 and 63.2 mm in (average 55.2 ± 4.3) females. In addition, no statistically significant differences were found between genders.
  
  
  CONCLUSIONS
  The results of the current study showed that after 40 mm proceeding of the ball end nasal osteotome, the surgeons must be aware of penetrating the sphenoidal rostrum.
authors: Gokceada Surgical Infirmary, Canakkale Military Hospital, 2nd Army Corps, Commando Troop No. 5, 17760 Surgical Infirmary, Gokceada, Canakkale, Turkey, aydingulses@gmail.com.
authors: Aydin
authors: A
authors: Gulses
authors: Cem
authors: C
authors: Oren
authors: Hasan Ayberk
authors: HA
authors: Altug
authors: Turan
authors: T
authors: Ilica
authors: Metin
authors: M
authors: Sencimen
authors: Fevzi
authors: F
authors: Erdemci
authors: Ismail Korhan
authors: IK
authors: Gider
authors: Necdet
authors: N
authors: Dogan
mesh_terms: D002508:Cephalometry / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009295:Nasal Bone / Q000000981:diagnostic imaging*; D019340:Osteotomy, Le Fort / Q000379:methods*; D011300:Preoperative Care; D012189:Retrospective Studies; D019291:Skull Base / Q000000981:diagnostic imaging / Q000601:surgery; D013100:Sphenoid Bone / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014421:Turkey