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What can cause me to be unable to pinch my thumb and index finger together?

The inability to pinch the thumb and index finger together indicates entrapment of the anterior interosseous nerve in the elbow. This nerve entrapment often occurs between the two heads of the pronator muscle due to muscle growth or inflammation in the muscle. You should see a physician if this condition arises.

(This answer provided for NATA by the Southern Utah University Athletic Training Education Program.)

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.