CMC Grind Test (for First CMC Joint Osteoarthritis)

The video tutorial explains the CMC grind test, used to assess first carpometacarpal joint osteoarthritis. It covers the anatomy of the first metacarpal and trapezium, the procedure for performing the test, and how to interpret the results. The tutorial also discusses differentiating first CMC osteoarthritis from Dequervain's tenosynovitis, highlighting the limitations of Finkelstein's and Icofx tests in this context.

How can a positive CMC grind test be interpreted in terms of symptoms?

What differentiates Dequervain's tenosynovitis from first CMC osteoarthritis based on the tests mentioned?