Osteoarthritis of the Wrist STT Joint and Radiocarpal Joint

Table 5

Occurrence of thumb carpometacarpal (CMC) joint osteoarthritis (OA) by stages.

	𝑁=	%
Stage 1	22	34
Stage 2	13	20
Stage 3	14	22
Stage 4-5	16	25
No CMC joint OA	35	—

𝑁=100, the percentages pertain to number of radiographs by stage out of the 65 radiographs that had thumb CMC joint arthritis.