As a core part of the central nervous system, the spinal cord has a distinctive role in the etiology and exacerbation of common and less common neurologic disorders. This issue of Neurologic Clinics will look at the spinal cord`s involvement in disorders arising generally in the CNS, as well as disorders based within the cord itself. Articles include: Spinal cord: A review of functional neuroanatomy; Infections of spinal cord; Multiple sclerosis and spinal cord; Transverse myelitis; Neuromyelitis optica; Vascular disorders of spinal cord; Spine and spinal cord trauma; Imaging of spinal cord: General principles; Toxic, nutritional, and metabolic deficiencies of spinal cord; Spinal cord: Motor neuron diseases; Spinal cord tumors: New views and future directions; Spinal cord and spasticity: A mechanistic view; Cervical spondylosis and stenosis; Autonomic nervous system disorders and spinal cord; Stiff person syndrome: What is new?; Sleep disorders in patients with spinal cord injury.