The anterolateral triangle contains the lateral wing of the sphenoid sinus, the vidian nerve, and the pterygoid region. Gang., trigeminal ganglion V1, ophthalmic division of the trigeminal nerve V2, maxillary division of the trigeminal nerve V3, mandibular division of the trigeminal nerve. GSPN, greater superficial petrosal nerve Mid. The anterior border is defined along the posterior border of the maxillary division of the trigeminal nerve, from the intersection with the mandibular nerve to the posterolateral-most border of the foramen rotundum the posterior border is defined along the anterior border of the mandibular division of the trigeminal nerve, from the intersection with the mandibular nerve to the anterolateral-most border of the foramen ovale the lateral border is defined as a line connecting the posterolateral-most border of the foramen rotundum to the anterolateral-most border of the foramen ovale. The turquoise triangle represents the anterolateral cavernous sinus surgical triangle. The dura mater has been removed to better visualize the underlying structures. As a result, we aim to review and standardize the nomenclature, measure the borders, and provide a clear gross anatomic photographic depiction of the boundaries of the anterolateral triangle. Only a few studies have precisely defined and measured the borders of the anterolateral triangle, and little agreement exists regarding the triangle nomenclature and size. The triangle was originally described by Dolenc in 1989 as the lateral triangle and has since undergone several revisions in nomenclature. The triangle is bound by the posterior border of the maxillary division of the trigeminal nerve, the anterior border of the mandibular division of the trigeminal nerve, and a line connecting the foramen rotundum to the foramen ovale (Figure 1). The paraclival triangles consist of the (9) inferomedial and (10) inferolateral triangles.
The middle fossa triangles consist of the (5) anteromedial, (6) anterolateral, (7) posteromedial (Kawase’s), and (8) posterolateral (Glasscock’s) triangles. The cavernous sinus triangles consist of the (1) oculomotor, (2) clinoidal, (3) supratrochlear, and (4) infratrochlear (Parkinson’s) triangles. The 10 triangles can be subdivided into three groups: cavernous sinus triangles, middle fossa triangles, and paraclival triangles. These triangles are helpful in understanding and planning surgical approaches to the cavernous sinus and middle cranial fossa. The borders of these triangles are roughly formed by cranial nerves (CN) II through VI and serve as important anatomic landmarks for the skull base surgeon. In general, there are 10 well-recognized surgical triangles surrounding the cavernous sinus. As such, normal anatomic relationships and the sizes of the anterolateral triangle must first be recognized to better access the pathologic changes within and around this region. The anterolateral triangle is helpful in understanding and planning surgical approaches to the cavernous sinus and middle cranial fossa. The mean area and standard deviation were 20.46 ± 9.30 mm 2.
The mean lengths and standard deviations of the anterior, posterior, and lateral borders were 8.3 ± 2.2 mm, 5.9 ± 2.0 mm, and 11.5 ± 2.9 mm, respectively. The triangle was defined and measurements of the anterior, posterior, and lateral borders were taken. A total of 12 midsagittally hemisected adult human cadaveric head halves were dissected to expose the anterolateral triangle. There are few studies in the English literature that have precisely defined and measured the borders of the anterolateral triangle and little agreement has been made regarding the nomenclature within the English literature. The anterolateral triangle is one of 10 surgical triangles of the cavernous sinus and serves as an important anatomic landmark for the skull base surgeon.
0 kommentar(er)
