Topographic Study Of Supraorbital Margins, And Notches In North Indian Human Dry Skulls And Its Clinical Applications

ABSTRACT

Introduction: The supraorbital notch (SON) is present at the junction of sharp lateral two-thirds and roundedmedial third of supraorbital margin. The neurovascular bundle exit via this notch/foramen. The morphometricvariations of the supraorbital ridge, notch, or foramen are not uncommon. The knowledge of these parameters isimportant to preserve the neurovascular bundle during surgery in this area.Materials and Methods: This study included seventy skulls obtained from department of Anatomy, Doon governmentmedical college Dehradun and Sri Guru Ram Rai Institute of medical and health sciences Dehradun followingstandard guidelines. All the parameters were observed and measured with the help of vernier caliper andreported in the tabulated form.Results: Out of seventy skulls, bilateral supraorbital notch and supraorbital foramen were found in 37.14% and14.28% respectively. Unilateral notch and contralateral foramen was found in eight skulls i.e. 11.42%. notch orforamen was absent in 5.71% skulls. The distance from SON/F to the midline (nasion) and frontozygomaticsuture were 25.86±3.11 and 29.89±2.19 mm. respectively . The mean distance between supraorbital notch orforamen to infraorbital foramen was 42.33 ±3.11 mm.Conclusion: Topographical anatomy of supraorbital ridge, notch and foramen and its variation is important toprevent the complications after surgical procedure in this area.