Chiropractic Methods Exam 1 Practice Test

Which finding most strongly supports radiculopathy over a peripheral nerve entrapment?

Pain radiating along a dermatomal pattern. Localized wrist pain. Isolated finger numbness with no limb pain. Pure motor weakness.

Correct Answer:

Pain radiating along a dermatomal pattern.

Explanation:

Pain that travels in a dermatomal pattern indicates involvement of a specific spinal nerve root, because dermatomes map to the sensory territory of each root. That root-level irritation or compression is the hallmark of radiculopathy. Peripheral nerve entrapment, by contrast, follows the distribution of the affected peripheral nerve rather than a root-specific dermatomal map. So the dermatomal pain pattern most strongly points to radiculopathy. Localized wrist pain fits a peripheral nerve entrapment, isolated finger numbness without limb pain suggests a distal neuropathy or nerve issue, and pure motor weakness can occur with either but isn’t as specific for a radiculopathy without accompanying dermatomal sensory changes.

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