Table 1.

Grading of radiographic findings based on blinded evaluation of x-rays.

Radiographic score		Radiographic findings
0	HEALTHY	Normal joint
1	DIM	Radiographic evidence of instability; no degenerative change (no osteophytes)
2	MILD	Mild degenerative change (occasional osteophytes)
3	MODERATE	Moderate degenerative change (osteophytes, subchondral sclerosis)
4	SEVERE	Severe degenerative change (osteophytes, subchondral sclerosis, bone remodeling)