Figure 3.

Reference photographs showing the grading of osteoarthritis of the CMC1 joints. The number on the left is the score for enlargement of the joint (0-3) and the number on the right represents position/subluxation of the thumb (0-3). a) Healthy CMC1 joints. b, c, d) Increasing osteoarthritis of the CMC1 joints.

Jonsson et al. BMC Musculoskeletal Disorders 2012 13:20   doi:10.1186/1471-2474-13-20
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