![Hitchhiker’s thumb means you can move your thumb joint backward beyond the normal range of motion, as far as 90 degrees.

Hitchhiker’s Thumb (Distal Hyperextensibility): Symptoms, Causes & Outlook. Cleveland Clinic. Published May 31, 2022. Accessed April 28, 2025. https://my.clevelandclinic.org/health/diseases/23118-hitchhikers-thumb](attachment:8fcc939e-cee6-4310-b347-160b015c9331:23118-hitchhikers-thumb.jpg)

Hitchhiker’s thumb means you can move your thumb joint backward beyond the normal range of motion, as far as 90 degrees.

Hitchhiker’s Thumb (Distal Hyperextensibility): Symptoms, Causes & Outlook. Cleveland Clinic. Published May 31, 2022. Accessed April 28, 2025. https://my.clevelandclinic.org/health/diseases/23118-hitchhikers-thumb