科研之友
微信
新浪微博
Facebook
分享链接
摘要
the skin of the posterior region of the leg is supplied by the medial sural cutaneous (mscn), lateral sural cutaneous (lscn), sural (sn) and the safenous nerves. these nerves present variations where the first and second nerves can be independents or both join to form the sural nerve. the objective of this research was to determine the sural nerve formation and the origin level of the mscn and lscn. we dissected 12 legs fixed in formaldehyde 10% (7 of the left side and 5 of the right side), from of adult chilean individuals. the origin and join points of the mscn and lscn nerves were localized in relation to horizontal line between the prominent points of the femoral condyles (bcl), so as a horizontal line between the two malleolus (bml), respectively. the distance between both lines was average 31.8 cm; the origin point of the lscn was 3.75 cm proximal to bcl and the origin point of the mscn was 2.23 cm proximal to this line. in 7 cases we observed both nerves forming the sural nerve (in two of them, by a fibular communicant branch) and in rest cases were independents. the joint point of the referred nerves was localized proximal to bml. these results are a contribution to the anatomic knowledge of the sensitive innervation of the leg.
