PMC8566075_01
Initial X-ray showing trapeziometacarpal osteoarthritis.
CRIOR2021-6881168.001.jpg
PMC8566075_01_CRIOR2021-6881168.001.jpg
fig1
Thus, this was a case of rhizarthrosis Grade IV according to the classification of Eaton, associated with hyperextension of the metacarpophalangeal joint (Figure 1).