Table 3 Correlation between fracture reduction quality (from plain x-ray and weight-bearing CT (WBCT)) and clinical outcomes 12 months after surgery for ankle fracture (n = 42)
Kellgren-Lawrence score p value (coef.) | Joint space narrowing on WBCT p value (coef.) | FFI-DK score p value (coef.) | AOFAS score p value (coef.) | EQ-5D-5L index score p value (coef.) | |
|---|---|---|---|---|---|
X-ray criteria | |||||
Medial step-off | 0.02 (− 0.09) | – | – | – | – |
Posterior step-off | – | – | – | 0.04 (10.4) | – |
Tibiotalar tilt | – | 0.03 (0.22) | – | – | – |
Tibiofibular overlap | – | 0.02 (11.2) | 0.0004 (− 3.6) | – | |
Oblique medial clear space | – | 0.007 (0.18) | – | – | – |
Dime sign | – | 0.008 (48.6) | – | – | |
Lag screw | – | 0.003 (0.28) | – | – | |
Distal fibula screws | – | – | – | – | – |
Proximal fibular screws | – | – | – | – | – |
WBCT criteria | – | – | – | ||
Medial step-off | – | – | 0.03 (− 42.7) | – | – |
Posterior step-off | – | – | 0.046 (− 17.3) | – | – |
Fibular rotation | – | – | - | 0.04 (0.7) | – |
Tibiofibular widening | – | – | 0.04 (10.7) | 0.02 (3.3) | 0.02 (− 0.04) |
Fibular anteroposterior translation | – | – | – | – | – |