Brachial PlexusBrachial Plexus NeuropathiesBrachial Plexus NeuritisBirth InjuriesChoroid PlexusParalysis, ObstetricNerve BlockMusculocutaneous NerveNerve TransferCervical PlexusParalysisMyenteric PlexusIntercostal NervesShoulder JointThoracic Outlet SyndromeMepivacaineSpinal Nerve RootsAnesthetics, LocalClavicleSubmucous PlexusButorphanolContracture