Table 4.
Rickets Severity Score (RSS).
| Grade | Description | |
|---|---|---|
| Wrist 1 | 0 | normal growth cartilage without signs of rickets |
| 0.5 | metaphyseal margin radiolucency without enlargement or irregularity of the metaphyseal margin | |
| 1 | enlargement of growth cartilage, irregularity of metaphyseal margin | |
| 1.5 | partial metaphyseal concavity or incomplete irregularity of metaphyseal margin | |
| 2 | concave appearance of the metaphyses with fraying of the margins | |
| Knee 2 | 0 | normal growth cartilage without signs of rickets |
| 1 | partial radiolucency, regular margins of metaphyses | |
| 2 | partial radiolucency, irregular margins of the metaphyses | |
| 3 | complete radiolucency, the epiphyses are clearly separated from metaphyses |
1 Assessing the ulna and radius individually; maximum score possible: 4. 2 Assessing the femur and tibia individually; multiplying the grade for the portion of cartilage affected: 0.5 if <1 condylus affected; 1 if 2 condylus are affected; maximum score 6.