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Lane–Sandhu histological score standard
| Category | Standard | Scores |
|---|---|---|
| Union | No sign of union | 0 |
| Fibrous union | 1 | |
| Osteochondral union | 2 | |
| Bone union | 3 | |
| Complete reorganization | 4 | |
| Spongiosa | No sign of cellular activity | 0 |
| Early bone formation | 1 | |
| Active new bone formation | 2 | |
| Reorganized spongiosa formation | 3 | |
| Complete reorganized spongiosa | 4 | |
| Cortex | Absence of cortex | 0 |
| Early detection | 1 | |
| Initiation of formation | 2 | |
| Reorganization in majority | 3 | |
| Complete organization | 4 |
