Table 2 Radiographical results
From: Long-term outcomes of cementless femoral stem revision with the Wagner cone prosthesis
Parameters | Number of hips (%) |
|---|---|
Preoperative femoral bone defect (Paprosky classification) | |
 IIa | 10 (35.7) |
 IIb | 7 (25.0) |
 IIc | 8 (28.5) |
 IIIa | 2 (7.1) |
 IIIb | 1 (3.6) |
 IIIc | 0 (0) |
Vertical subsidence | Average 1.67 mm (0~10mm) |
 0-3 mm | 19 (67.8) |
 3-5 mm | 6 (21.4) |
 >5 mm | 3 (10.7) |
Stability by Engh method | |
 Stable osteointegration | 26 (92.8) |
 Stable fibrous fixation | 1 (3.5) |
 Unstable fibrous fixation | 1 (3.5) |
Radiolucentline (Gruen zone) | |
 I | 11 (39.2) |
 II | 3 (10.7) |
 III | 0 (0) |
 IV | 0 (0) |
 V | 0 (0) |
 VI | 2 (7.1) |
 VII | 7 (25.0) |
Heterotopic bone formation | |
 Grade I | 2 (7.1) |
 Grade II | 2 (7.1) |
Stress shielding | |
 Grade I | 5 (17.9) |
 Grade II | 2 (7.1) |
 Grade III | 0 (0) |