Table 1.

A proposed ultrasonographic scale for grading of primary KOA according to medial femoral osteophytes.

Grade 0		No osteophytes; regular end of femoral condyle without any projections.
Grade 1		Minor osteophyte; just a small projection from the femoral condyle.
Grade 2	2A	Small osteophytes; a projection from the femoral condyle that appears to have an inferiorpart in joint space zone.
	2B	Large osteophyte appears to be separated from femoral condyle and to have an inferior part in joint space zone.
Grade 3		Large osteophyte appears to be separated from femoral condyle and to have an inferior part in joint space zone with small superior extension parallel to femoral bone.
Grade 4		Mainly superior osteophyte parallel to femoral bone with or without an inferior part in joint space zone.