Table 4.
Radiographic outcome
|
Study group |
Control group |
p value | |
|---|---|---|---|
| n = 70 | n = 173 | ||
| Stable bony union [n] (%) |
66 (94.3) |
156 (90.2) |
0.30 |
|
Periprosthetic radiolucencies | |||
| No periprosthetic radiolucency [n] (%) |
66 (94.3) |
156 (90.2) |
0.30 |
| Partial radiolucency < 1 mm [n] (%) |
2 (2.9) |
7 (4) |
0.66 |
| Partial radiolucency > 1 mm [n] (%) |
2 (2.9) |
9 (5.2) |
0.43 |
| Progressive radiolucency [n] (%) |
0 (0) |
1 (0.6) |
0.52 |
|
Sum of radiolucencies [n] (%) |
4 (5.7) |
17 (9.8) |
0.30 |
|
Stem migration | |||
| No stem migration [n] (%) |
67 (95.7) |
157 (90.8) |
0.19 |
| Stem migration < 2 mm [n] (%) |
1 (1.4) |
8 (4.6) |
0.23 |
| Stem migration 2–5 mm [n] (%) |
1 (1.4) |
4 (2.3) |
0.66 |
| Stem migration > 5 mm [n] (%) |
1 (1.4) |
4 (2.3) |
0.66 |
|
Sum of stem migration [n] (%) |
3 (4.3) |
16 (9.2) |
0.19 |
|
Proximal stress shielding | |||
| Proximal stress shielding [n] (%) | 4 (5.7) | 31 (17.9) | <0.05 |