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International Journal of Morphology

On-line version ISSN 0717-9502

Abstract

CETKIN, Hatice Esra; KERVANCIOGLU, Piraye  and  CETKIN, Murat. The Course and Branching Patterns of the Superficial Branch of Radial Nerve in Foetuses and Clinical Significance. Int. J. Morphol. [online]. 2019, vol.37, n.4, pp.1280-1285. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022019000401280.

Knowing the anatomical, topographic and morphometric properties of the superficial branch of the radial nerve (SBRN) in the forearm and the dorsum of the hand is important for minimizing nerve damage. The purpose of this study is to evaluate the anatomical and morphometric properties of SBRN in foetuses. Forty forearms of twenty-one foetuses (n=21) were dissected. The anatomical variations of SBRN in the dorsal forearm were assessed in three types (Type-1, Type-2 and Type-3). The innervation areas in dorsum of hand were assessed in four types (Type-1, Type-2, Type-3 and Type-4). The forearm length was divided to three part and emerging point of SBRN was determined as topographically. The relation of the SBRN with lateral antebrachial cutaneous nerve (LACN), anatomic snuffbox and cephalic vein was also evaluated. In forearm, Type-1 variation rate of SBRN was 87.5 %. In the dorsum of hand, Type-3 innervation pattern was 32.5 %. The emerging rate of SBRN in the middle third of the forearm was 74.4 %. There were nerve branches between LACN and SBRN or its terminal branches in 32.5 % of the forearms. The branches of SBRN passed within the margins of anatomic snuffbox in 50 % of the forearms. The most frequently branching type of SBRN was Type-1 in the forearm and Type-3 in the dorsum of hand in foetuses. These results may aid to minimize nerve injuries performed in clinical applications.

Keywords : Foetus; Radial nerve; Variation; Innervation.

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