Table 4 Descriptions for bone sclerosis scoring

0

Normal, no observable difference in subchondral or epiphyseal trabecular bone thickness in medial vs. lateral

1

5-10% increase in subchondral or epiphyseal trabecular bone thickness in medial vs. lateral

2

11-25% increase in subchondral or epiphyseal trabecular bone thickness in medial vs. lateral

3

26-50% increase in subchondral or epiphyseal trabecular bone thickness in medial vs. lateral, obvious reduction in marrow spaces in outer ¾ of medial tibia

4

51-75% increase in subchondral or epiphyseal trabecular bone thickness in medial vs. lateral, generally has very little marrow space in outer ¾ of medial tibia, marrow spaces remain adjacent to cruciates

5

76-100% increase in subchondral or epiphyseal trabecular bone thickness in medial vs. lateral, generally has very little marrow space remains in medial tibia