Why is there a bump on the inside of the elbow?

The bump on the inside of your elbow, which is called the medial epicondyle, is the anchor point for the muscles that flex your wrist. You use it when you make a fist or when you turn your wrist down, which is called pronation.

(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.