This video demonstrates the OK Sign as a test to determine if a patient has compromise of the anterior interosseous nerve. View the complete hand and wrist examination learning module at https://sites.google.com/a/umich.edu/fammed-modules/

Any medical information in this material is intended to inform and educate and is not a tool for self-diagnosis or a replacement for medical evaluation, advice, diagnosis or treatment by a healthcare professional. Please speak to your physician if you have questions about your medical condition.

CC: BY-NC University of Michigan Family Medicine Residency Program. This material is licensed under a Creative Commons Attribution - Noncommercial 3.0 License http://creativecommons.org/licenses/by-nc/3.0/.