科研之友
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摘要
The objective of this research was to study the cutaneous branching of the superficial fibular nerve (SFN), with a topographic and biometric focus, aiming to provide further anatomical details for foot and ankle surgery in general. There were analyzed 30 right and left lower limbs of 15 corpses of male adult Brazilian individuals. The cutaneous branching of the nerve was dissected and measurements taken with a tape measure and digital caliper. The nerve emerged at the surface as a single trunk in 66.7% and divided into two branches in 33.3% of the cases. When a single trunk emerged, it appeared at the level of the third distal of the leg in 75%, at the boundary between the middle and distal thirds in 20%, and, in the middle third in 5%. When divided, in most cases (60%), the two branches had the same topography, in general, in the distal third of the leg. The average width of the nerve, at its emergence, when single, was 3.1 ㊣ 0.8 mm, when divided, one of its branches, the medial dorsal cutaneous nerve (MDCn) of the foot, measured 2.4 ㊣ 0.9 mm, and the other, the intermediate dorsal cutaneous nerve (IDCn) of the foot 2.1 ㊣ 0.6 mm. The MDCn communicated with the deep fibular nerve in 53.3%, and the IDCn with the sural nerve in 33.3%. In its distribution in the dorsum of the foot, the MDCn was related mainly with the first metatarsal bone and the first and second interosseous spaces, and the IDCn, in general, with the fourth metatarsal bone and the third and fourth interosseous spaces. There are important variations in the emergence and cutaneous branching of the SFN, which must be known in order to avoid iatrogenic injury during surgical procedures on the foot and ankle El prop車sito de esta investigaci車n fue estudiar la ramificaci車n cut芍nea del nervio fibular superficial (NFS), con enfoques topogr芍fico y biom谷trico, para proveer mayores detalles anat車micos a las cirug赤as del pie y tobillo. Fueron analizados 30 miembros inferiores, derechos e izquierdos, de 15 cad芍veres de individuos brasile os adultos, de sexo masculino. La ramificaci車n cut芍nea del nervio fue disecada y las medidas fueron tomadas con cinta m谷trica y paqu赤metro digital. El nervio se observ車 en la superficie como tronco 迆nico en 66,7% de los casos y dividido en dos ramos en 33,3%. Cuando se present車 como tronco 迆nico, emergi車 a nivel del tercio distal de la pierna en 75%, en el l赤mite entre los tercios medio y distal en 20%, y, en el tercio medio en 5%. Cuando se present車 dividido, los dos ramos tuvieron la misma topograf赤a en 60% de los casos, en general, el tercio distal de la pierna. Al
