Table 2 Classification for BL after CDR
Grade | Definition |
|---|---|
0 | None. BL accounts for 0–1% of the length of endplate |
1 | Mild. BL accounts for 1–5% of the length of endplate |
2 | Moderate. BL accounts for 5–10% of the length of endplate |
3 | Severe without collapse. BL accounts for > 10% of the length of endplate without prosthesis subsidence |
4 | Severe with collapse. BL accounts for > 10% of the length of endplate with prosthesis subsidence |