ABSTRACT
S2: posterior thigh, perianal). Most lumbar disks compress the root below
the disk level, that is, L45 disk compresses L5, L5S1 disk compresses S1
(exceptions for this rule are far lateral disk protrusions that instead
compress the root above), early mononeuritis multiplex, unilateral lumbo-
sacral plexopathy, meralgia paresthetica (compression neuropathy of
lateral femoral cutaneous nerve of the thigh) l Asymmetric bilateral-mononeuritis multiplex (vasculitis, diabetes rarely,
many other causes), bilateral radiculopathies (central disk-usually
impairs bowel, bladder function; root infiltration by inflammation or
tumor), spinal stenosis, bilateral lumbosacral plexopathy l Associated back pain, radiation-root compression from disk, spinal stenosis
How is the Pain Described?
