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Worth's classification system for radiographic evaluation of bone graft incorporation
| Grade | Description |
|---|---|
| G1 | Lucent graft site indicating graft failure |
| G2 | Obvious lytic line at the interface of the graft to the surrounding host bone or a partially lytic graft site |
| G3 | No lytic line is present, but an obvious graft/host interface is still to be remodelled |
| G4 | Difficulty in discerning the graft site because of successful remodelling of graft trabeculae into those of the host bone |
