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.

What is the primary purpose of the CMC grind test?

• To test for carpal tunnel syndrome

• To assess Dequervain's tenosynovitis

• To evaluate first carpometacarpal joint osteoarthritis

• To measure grip strength

Which bones are involved in the first carpometacarpal joint?

• First metacarpal and lunate

• Second metacarpal and trapezium

• First metacarpal and trapezium

• First metacarpal and scaphoid

During the CMC grind test, what grip is used to grasp the first metacarpal?

• Lateral prehensile grip

• Hook grip

• Palmar grip

• Pinch grip

What indicates a positive CMC grind test?

• Weakness in the thumb

• Swelling in the wrist

• Pain around the first CMC joint

• Numbness in the fingers

Which tests are not suitable for differentiating Dequervain's tenosynovitis from first CMC osteoarthritis?

• Allen's and Adson's tests

• Neer's and Hawkins' tests

• Tinel's and Phalen's tests

• Finkelstein's and Eichhoff's tests