How can you differentiate radicular pain from referred joint pain in a clinical exam?

How can you differentiate radicular pain from referred joint pain in a clinical exam?

• A. Radicular pain is localized to joint; referred pain follows dermatomal distribution
• B. Radicular pain follows a dermatomal distribution with sensory/motor changes and reflex abnormalities; referred pain is localized to the joint without dermatomal pattern
• C. Both have dermatomal patterns
• D. Referred pain involves radicular signs

Answer: (C)

Radicular pain comes from irritation of a spinal nerve root, so the pain travels along the specific nerve’s dermatomal territory. You’ll typically see sensory changes in that dermatome, possible weakness in the corresponding myotome, and reflex alterations. Referred joint pain, by contrast, is perceived away from or around the joint but does not respect a dermatomal map and usually lacks objective neurologic signs. In practice, map sensation to dermatomes, check muscle strength and reflexes, and note whether pain reproduces with nerve-root–specific provocative tests; a dermatomal distribution with neuro deficits points to radicular pain, while localized joint pain without dermatomal pattern or neuro signs suggests referred pain.

Radicular pain comes from irritation of a spinal nerve root, so the pain travels along the specific nerve’s dermatomal territory. You’ll typically see sensory changes in that dermatome, possible weakness in the corresponding myotome, and reflex alterations. Referred joint pain, by contrast, is perceived away from or around the joint but does not respect a dermatomal map and usually lacks objective neurologic signs. In practice, map sensation to dermatomes, check muscle strength and reflexes, and note whether pain reproduces with nerve-root–specific provocative tests; a dermatomal distribution with neuro deficits points to radicular pain, while localized joint pain without dermatomal pattern or neuro signs suggests referred pain.