Table 2.
Arthritis type bone morphology and radiological findings
| n (%) | |
| Arthritistype | |
| Primaryosteoarthritis | 33 (54.9) |
| Dysplasia (type A)1 | 13 (21.6) |
| Low dislocation (type B)1 | 2 (3.9) |
| Osteonecrosis | 7 (11.8) |
| Post traumaticarthrtis | 4 (5.9) |
| Other | 1 (2.0) |
| Previous operation (osteotomy, Fracture fixation) | 6 (9.8) |
| Proximal femoral morphology (Dorr type) | |
| A | 11 (17.6) |
| B | 48 (78.4) |
| C | 2 (3.9) |
| Ectopic ossification (Brooker classification) | |
| All | 11 (17.6) |
| Class 1 | 6 (9.8) |
| Class 2 | 5 (7.8) |
| Modified Gruen zones | |
| Radiolucent lines | 0 |
| Reactive lines (zones 3, 4, 5) | 2 (3.3) |
| Cortical hypertrophy (zones 3, 5) | 4 (6.6) |
| Subsidencein mm2 | 1.8 ± 0.9 (0.0-3.9) |
| Leg length discrepancy in mm2 | 1.7 ± 5.4 (-17-19) |
1
Chartofylakidis classification.
2
The values are given as the mean ± SD and the range in parentheses.