Which of the following describes the result of a positive Finkelstein test?

• A. Pain on wrist flexion
• B. Pain on wrist abduction
• C. Pain on thumb extension
• D. Pain on thumb flexion

Answer: (B)

The result of a positive Finkelstein test specifically indicates pain on thumb extension. This test is primarily used to diagnose De Quervain's tenosynovitis, which is a condition that affects the tendons on the thumb side of the wrist. When performing the Finkelstein test, the patient tucks their thumb into their palm and then ulnar deviates the wrist. A positive result occurs when this maneuver elicits pain, particularly during the extension motion of the thumb. The pain arises because the abductor pollicis longus and extensor pollicis brevis tendons are inflamed and irritated as they move through the first dorsal compartment of the wrist.

The other options describe movements or areas that are not associated with a positive Finkelstein test, further emphasizing the specificity of the test in relation to thumb extension. Pain during wrist flexion or abduction does not specifically indicate De Quervain's tenosynovitis, nor does pain during thumb flexion, which would involve different tendons and conditions.