Table 1.

Crawford Radiographic scoring system

Radiographic evaluation
0 = normal
1 = no bone or cartilage change, slight joint distention and effusion.
2 = minimal bone changes, osteophytes < 1 mm, without evidence of cartilage loss
3 = moderate bone changes, osteophytes 1- 2 mm, bone lysis or cartilage loss
4 = severe bone changes, osteophytes > 2 mm, with/without evidence of cartilage loss and/or bone lysis