Which condition involves inflammation of the spinal nerve roots?

Radiculitis refers specifically to the inflammation of the nerve roots that exit the spinal column. This condition often results from irritation or injury to the nerve roots, which can lead to symptoms such as pain, weakness, or numbness that radiates along the pathway of the affected nerves. It is primarily associated with issues such as herniated discs or spinal stenosis.

In contrast, poliomyelitis is primarily a viral infection that affects the spinal cord, leading to paralysis rather than direct inflammation of the nerve roots. Neuritis involves inflammation of a nerve or nerves, but it is not specific to the spinal roots; it could affect any peripheral nerve. Arthritis pertains to joint inflammation and is not related to nerve root conditions at all. Thus, radiculitis is the most appropriate choice for a condition that directly involves inflammation of the spinal nerve roots.