The supraclavicular nerve block is ideal for procedures
of the upper arm, from the midhumeral
level down to the hand (Figure 8-1). The brachial
plexus is most compact at the level of the trunks
formed by the C5–T1 nerve roots, so blockade here
has the greatest likelihood of blocking all of the
branches of the brachial plexus. This results in rapid
onset times and, ultimately, high success rates for
surgery and analgesia of the upper extremity (excluding
the shoulder).

i am confused, why would someone get this? it doesnt seem like it'd benefit a person tos but maybe neuritis?

any ideas? thanks!