How PIT Calculates the HECI
Horizons combines three components along with weighting to calculate the HECI. See .
Horizons finds the HECI by using the following formula:
HECI = WL (MAX (SL3, SL10)) + WT (MAX (SF, STL, STH)) + WR (MAX (SRL, SRR))
The Maximum HECI score is defined when all condition scores are equal to 100 such that:
HECIMAX = 0.8 * 100 + 0.6 * 100 + 1.0 * 100 = 240
Horizons classifies output into the following bands for simplified viewing. See Viewing the HECI in PIT.
| Banding | Threshold | Interpretation |
|---|---|---|
| Green | HECI < 40 | No treatment recommended |
| Amber | HECI >= 40 and HECI < 100 | Resurfacing recommended |
| Red | HECI = 100 | 100mm Inlay or greater recommended |