A special test confirms sensory disturbance affecting the fourth and fifth digits of the hand. Which test was most likely used?

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Multiple Choice

A special test confirms sensory disturbance affecting the fourth and fifth digits of the hand. Which test was most likely used?

Explanation:
When the sensory disturbance is in the fourth and fifth digits, you’re looking at the ulnar nerve distribution. A tapping test, known as the Tinel sign, is used to assess nerve irritability by percussing along the course of the nerve (for the ulnar nerve, at the elbow or at the wrist). If tapping reproduces paresthesias in the 4th and 5th digits, it indicates nerve irritation or compression rather than issues with muscles (resisted testing), joint movement (joint mobility testing), or reflex pathways. This makes tapping the most likely test used.

When the sensory disturbance is in the fourth and fifth digits, you’re looking at the ulnar nerve distribution. A tapping test, known as the Tinel sign, is used to assess nerve irritability by percussing along the course of the nerve (for the ulnar nerve, at the elbow or at the wrist). If tapping reproduces paresthesias in the 4th and 5th digits, it indicates nerve irritation or compression rather than issues with muscles (resisted testing), joint movement (joint mobility testing), or reflex pathways. This makes tapping the most likely test used.

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