Scholarlink

The supraclavicular brachial plexus includes the spinal nerves (roots) and the trunks. The brachial plexus is usually formed by the ventral rami of the spinal nerves from C5 to T1. Contribution is very common from C4 (prefixed) and uncommon from T2 (postfixed). It forms between the scalenus anterior and scalenus medius muscles and lies in the posterior triangle of the neck. C5 and C6 make the upper (superior) trunk, C7 continues as the middle trunk, and C8 and T1 make the lower (inferior) trunk. The upper trunk typically ends in a trifurcation from cranial to caudal: suprascapular nerve (S), posterior division (P), and anterior division (A), respectively, hence the acronym SPA.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Brachial Plexus, Supraclavicular Exposure

  • 章节

  • 发表日期：

    2025年

查看全文
  • Amgad S. Hanna,
  • Mark E. Ehlers

摘要

The supraclavicular brachial plexus includes the spinal nerves (roots) and the trunks. The brachial plexus is usually formed by the ventral rami of the spinal nerves from C5 to T1. Contribution is very common from C4 (prefixed) and uncommon from T2 (postfixed). It forms between the scalenus anterior and scalenus medius muscles and lies in the posterior triangle of the neck. C5 and C6 make the upper (superior) trunk, C7 continues as the middle trunk, and C8 and T1 make the lower (inferior) trunk. The upper trunk typically ends in a trifurcation from cranial to caudal: suprascapular nerve (S), posterior division (P), and anterior division (A), respectively, hence the acronym SPA.