📌Simplified brachial plexus anatomy👉 demonstrating the different points at which it divides with the anatomical locations of plexus blocks and subsequent cutaneous sensory coverage. Inset image demonstrates the ‘hourglass’ shape of the plexus. Note that the nerve roots in the cervical region (C5–8) emerge above the corresponding vertebra, whilst the T1 nerve root appears below.
*(A, axillary nerve; M, median nerve; Mc, musculocutaneous nerve; R, radial nerve; U, ulnar nerve.)
(https://doi.org/10.1016/j.bjae.2021.07.007)