Characterization of orbits in Sudanese population using computed tomography

Abstract

Characterization of orbit in Sudanese population as measurement of orbital diameter by CT helps to understand the anatomical structure which helps in facial bone surgery. The objectives of this study are measurement the diameter of orbit and to correlate the measurement with head dimension and age. The study design is measurements of orbital width, orbital height, orbital index, biorbital width, introrbital width, and transverse head diameter were obtained in (mm). The study was carried out in ALModares Medical Center in Khartoum. The result of the study showed the mean of orbital width was (37.022) mm, orbital height (33.682) mm, orbital index (91.01) mm, biorbital width (95.918) mm, interorbital width (24.444) mm, transverse diameter of head (133.098) mm. the mean orbital index (90.12) mm for males and (91.9) mm for females. The study showed the mean of orbital index (89.5±4.173) mm at age between (10-19) years old, (91.483±3.728) mm at age between (20-29) years, (91.085±6.076) mm at age between (30-39) years, (90.4713±4.064) mm at age between (40-49) years, (91.08571±3.044) mm at age between (50-59) years, (91.36364±2.990) mm at age between (60-69) years, (90.88±4.293) at age between (70-79) years. The conclusion of the study there were linear relationships between orbital height, orbital width, orbital index, biorbital width, interorbital width and transverse diameter of head with age show from figure. There were linear relationships between orbital height, orbital width and orbital index with transverse diameter of head. The diameter of orbit can increased due to age, but after 70 years old the diameter start to decrease due to bone shrinking. The orbital index higher in females than males. The orbital index higher in Sudanese than other previous studies.