A Standardized Criteria of Thumb Carpometacarpal Joint Instability to Guide Treatments
By Naoki Kato, MD, PhD Thumb carpometacarpal (CMC) joint pain is a common source of hand disability. This joint acquires its stability from ligamentous structures with minimal osseous support. Ligamentous laxity therefore leads to an incongruous relationship between the thumb metacarpal and the trapezius, resulting in chronic or recurrent subluxation of the CMC joint. The […]