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Surface Proteoglycan Value (SPGV) Ranges used for Mankin PG Depletion Scores
| PG staining | HHGS PG score | SPGV range |
|---|---|---|
|
| ||
| Normal | 0 | > 0.45 |
| Slight reduction | 1 | 0.4 - 0.45 |
| Moderate reduction | 2 | 0.3 - 0.4 |
| Severe reduction | 3 | 0.15 - 0.3 |
| No staining | 4 | < 0.15 |
