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Characteristics of the graft according to the radiological grading system of Pierchon et al. [28]
| Stage | Radiographic appearance of the graft |
|---|---|
| Stage 1 | Heterogeneous |
| Stage 2 | Homogeneous |
| Stage 3 | Condensation |
| Stage 4 | Trabecular remodelling |
| Stage 5 | Cortical repair |
