Figure 3From: The use of digital photographs for the diagnosis of hand osteoarthritis: the AGES-Reykjavik study 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.Back to article page