The superficial branches are the lesser (minor) occipital, great auricular, transverse (cutaneous) cervical, and supraclavicular nerves. The lesser occipital nerve (C2, C3) curves around the accessory (XI) nerve, ascends near…

Acute neuropathies tend to manifest more with predominant motor manifestations, for instance, peroneal neuropathy—a footdrop, and radial neuropathy—a wristdrop; sensory disturbances are relatively mild. Entrapment neuropathies usually present with paresthesias…

In contrast to the brachial plexus, traumatic lesions of the lumbosacral plexus are relatively uncommon due to its protective location within the pelvis. Injuries such as gunshot wounds, falls, and…

Neuralgic amyotrophy (acute brachial plexitis) is a disorder of acute nerve injury often triggered by an acute infectious illness, immunization, or surgery. It has many potential presentations but usually affects…

Neonatal brachial plexopathy is believed to be secondary to stretching of the plexus by traction, the nerve roots being anchored by the spinal column and cord. Lesion severity depends on…

The plexus formation allows rearrangements of the efferent and afferent somatic and autonomic fibers (the latter reach the roots of the plexus through sympathetic rami communicantes) so that they are…

The lumbar plexus is produced by the union of the ventral rami of the first three lumbar nerves and the greater part of the fourth, with a contribution from the…

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Diabetic lumbosacral radiculoplexus neuropathy is a painful condition that causes severe weakness and muscle wasting of the lower extremities. A number of clinical terms have been applied to this syndrome,…