Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan.
Ophthalmic Plast Reconstr Surg. 2011 Nov-Dec;27(6):457-9. doi: 10.1097/IOP.0b013e318222eb82.
To examine the positional relationship between the ethmoidal foramina and the frontoethmoidal suture.
Eighty-four orbits of 42 Japanese cadavers (24 male and 18 female cadavers; average age at death, 81.0 years; range, 61-101 years), fixed in 10% buffered formalin, were used for investigation. The most anterior or posterior ethmoidal foramen was defined as the anterior or posterior ethmoidal foramen, respectively. All the intermediate foramina were determined as the accessory foramina. The vertical distances from the frontoethmoidal suture to the anterior, posterior, and accessory ethmoidal foramina were examined.
Seventeen anterior ethmoidal foramina (20.2%) were situated above the frontoethmoidal suture (mean distance, 1.8 mm), and 2 posterior ethmoidal foramina (2.3%) were situated at 1.0 mm and 1.5 mm above the suture. Although accessory ethmoidal foramina were detected in 32 orbits (38.1%), one accessory foramen (middle ethmoidal foramen) was identified in 30 orbits, and 2 foramina (additional deep-middle ethmoidal foramina), in 2 orbits. One middle ethmoidal foramen (3.1%) and 1 deep-middle ethmoidal foramen (50.0%) were located at 1.5 mm above the suture. In total, 2 of the 34 accessory ethmoidal foramina (5.9%) exhibited the extrasutural location.
Several ethmoidal foramina were situated above the frontoethmoidal suture. The anterior ethmoidal foramen most frequently showed the situation, followed by the accessory and posterior foramina, in order. Our findings help predict the anatomical variations in the location of the ethmoidal foramina in relation to the frontoethmoidal suture, thereby enhancing safety for medial orbital wall surgery.
研究筛骨孔与额筛缝之间的位置关系。
本研究使用了 42 具日本尸体（24 具男性尸体和 18 具女性尸体；死亡时的平均年龄为 81.0 岁，范围为 61-101 岁）的 84 个眼眶，这些尸体均用 10%缓冲福尔马林固定。最前或最后筛骨孔分别定义为前筛骨孔或后筛骨孔。所有中间筛骨孔均被确定为副筛骨孔。从前筛骨缝到前筛骨孔、后筛骨孔和副筛骨孔的垂直距离进行了检查。
17 个前筛骨孔（20.2%）位于额筛缝上方（平均距离为 1.8mm），2 个后筛骨孔（2.3%）位于缝上方 1.0mm 和 1.5mm 处。虽然在 32 个眼眶中发现了副筛骨孔（38.1%），但在 30 个眼眶中只发现了一个副筛骨孔（中筛骨孔），在 2 个眼眶中发现了两个副筛骨孔（额外深中筛骨孔）。1 个中筛骨孔（3.1%）和 1 个深中筛骨孔（50.0%）位于缝上方 1.5mm 处。总的来说，34 个副筛骨孔中有 2 个（5.9%）为额外缝外位置。
几个筛骨孔位于额筛缝上方。前筛骨孔最常见，其次是副筛骨孔，然后是后筛骨孔。我们的发现有助于预测筛骨孔与额筛缝之间位置的解剖变异，从而提高内侧眶壁手术的安全性。
