title: [Computerized three-dimensional reconstruction of the human rectus EOM pulley].
abstract: OBJECTIVE
  To establish 3-D visible human model of the rectus EOM Pulley.
  
  
  METHODS
  The pictures of Masson stained adjacent coronal sections of a whole orbit were imaged by digital camera, which were entered into computer continuously after removing spottiness through PhotoShop 7.0 software. 3D-Doctor software was used to register and split the image. Finally three-dimensional computerized reconstructions of the rectus EOM pulley and eye ball were achieved. At the same time pulley system structure was analyzed using the 3D-Doctor software.
  
  
  RESULTS
  Three-dimensional model of the rectus EOM pulley displayed directly the three-dimensional relationship of pulley and the eye ball, extraocular muscles and orbit. This three-dimensional model could be rotated randomly, providing convenience for multi-angle observation. The demonstration of the three-dimensional model selectively provides a approach to get rid of disturbance and lock the aim for observation. The length of pulley was about 4.6 to 5.8 mm. The origin of the four rectus pulleys was 13.8 to 18.0 mm from the corneoscleral limbus. Media rectus pulley was thickest among four rectus pulley. The ratio between media rectus pulley thickness and corresponding media rectus thickness could reach 1.11.
  
  
  CONCLUSIONS
  Three-dimensional model of the rectus EOM pulley provided direct picture for clinic doctors to understand the structure of pulley, which also provided three-dimensional anatomic basis for iconography research of the rectus EOM pulley. The data of pulley could be helpful to establish Chinese rectus EOM pulleys data bank.
authors.affiliation: Tianjin Medical University, Tianjin 300070, China.
authors.forename: Xiao-mei
authors.initials: XM
authors.lastname: Han
authors.forename: Kan-xing
authors.initials: KX
authors.lastname: Zhao
authors.forename: Xue-han
authors.initials: XH
authors.lastname: Qian
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D008953:Models, Anatomic; D009801:Oculomotor Muscles / Q000033:anatomy & histology*; D014321:Trochlear Nerve / Q000033:anatomy & histology*; D055815:Young Adult