Table 1.
Evaluation of all Directly Measured Variables.
| Dorsiflexion | Neutral Position | Distraction | |
|---|---|---|---|
| Talar dome | |||
| Anterior width (mm) | 31.0±0.7 (26.0-35.0) | 31.6±0.8 (22.2-37.8) | |
| Posterior width (mm) | 28.5±1.0 (24.1-39.7) | 28.1±0.6 (23.9-34.1) | |
| Lateral circumference (mm) | 40.3±1.4 (32.0-48.0) | 38.9±1.3 (32.0-53.0) | |
| Medial circumference (mm) | 38.2±1.8 (28.0-50.0) | 36.3±1.3 (28.0-50.0) | |
| Inferior tibial articular surface | |||
| Width (mm) | 36.4±1.0 (28.6-42.1) | 35.4±1.0 (27.4-42.9) | |
| AP length (mm) | 31.8±0.9 (25.2-37.7) | 31.5±0.9 (25.0-39.3) | |
| Distance from posterior border of talar dome to anterior tibial rim in neutral position | |||
| Lateral (mm) | 6.5±1.0 (0.0-12.0) | 6.9±0.7 (0.0-12.2) | |
| Medial (mm) | 8.0±1.2 (0.0-20.0) | 9.0±0.8 (0.0-16.0) | |
| Distance from posterior border of talar dome to marked indentation by chondral pick | |||
| Lateral (mm) a | 19.0±1.1 (11.0-26.0) | 13.7±1.2 (5.0-30.0) | 16.1±1.5 (4.1-30.3) |
| Medial (mm) b | 19.8±1.4 (9.0-28.0) | 14.0±1.0 (6.4-26.0) | 15.7±1.0 (6.3-24.0) |
Abbreviation: AP, anteroposterior.
a
Significant difference between maximal dorsiflexion and neutral position (P = .002) as well as maximal dorsiflexion and noninvasive distraction (P = .046).
b
Significant difference between maximal dorsiflexion and noninvasive distraction compared to neutral position (P = .020).