Original Article

Determination of safety surgical margins in orbital decompression: an anatomic study - Original Article

  • Dilek Yüksel
  • Halil İbrahim Açar
  • Simel Kendir
  • Emre Hekimoğlu
  • Ali Fırat Esmer
  • Deniz Basman
  • Sunay Duman
  • Alaittin Elhan

Received Date: 29.11.2007 Accepted Date: 20.06.2008 Turk J Ophthalmol 2008;38(5):431-437

Objective:

Determination of safety medial and lateral orbital wall osteotomy margins for orbital decompression in the treatment of thyroid orbitopathy.

Material-Methods:

We studied on 10 adult skull and 2 cadaver. We measured distances between cranial fossa, optic canal, ethmoidal foramina and orbital rim, lacrimal crest, sutures and determined safety surgical margins.

Results:

In lateral orbital wall; mean distance between lateral orbital rim and middle cranial fossa was 24,39 mm. Mean distances between anterior point of frontozygomatic suture and anterior cranial fossa was 17,60 mm, between posterior point of frontozygomatic suture and anterior cranial fossa was 9,05 mm. In medial orbital wall; mean distances between posterior lacrimal crest and anterior ethmoidal foramina, posterior lacrimal crest and posterior ethmoi-dal foramina, posterior lacrimal crest and anterior wall of sphenoid sinus, posterior lacrimal crest and optic canal were 14,18 mm, 25.84 mm, 31.66 mm, 35,13 mm respectively. Mean distances between anterior ethmoidal foramina and maxilloethmoidal suture, posterior etmoidal foramina and maxilloethmoidal suture were 16,08 mm ve 13,01 mm respectively.

Conclusion:

The findings of this anatomic study will be helpfull in safety orbital decomp-ression.

Keywords: Orbital decompression, anatomic, cadaver

Full Text (Turkish)