Welcome to one of the most important chapters in topical diagnosis. Here we analyze how impulse conduction is impaired, ranging from the spinal cord level down to the distal branches of peripheral nerves.
This section consists of two comprehensive modules. The first is dedicated to spinal cord lesion syndromes at various levels across the transverse and longitudinal axes, including segmental and tract disorders. The second module covers peripheral nervous system lesion syndromes: the clinical presentation of root, nerve plexus, and individual peripheral nerve involvement.
During practical classes and examinations, examiners are strictest on Brown-Séquard syndrome, the differential diagnosis of anterior horn versus peripheral nerve lesions, and the innervation zones of the brachial plexus (wrist drop, claw hand, and ape hand). The ability to logically deduce the lesion focus from these symptoms is a core skill in any clinician's arsenal.