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Distribution of femoral bone radiolucency, atrophy, hypertrophy and osteolysis around the stem in relation to Gruen zones
| Zonal area | |||||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
| Radiolucency | 7 | 0 | 0 | 0 | 1 | 0 | 0 |
| Atrophy | 11 | 0 | 0 | 0 | 0 | 0 | 18 |
| Hypertrophy | 0 | 0 | 0 | 19 | 2 | 0 | 0 |
| Osteolysis | 7 | 2 | 0 | 0 | 0 | 1 | 8 |
