Table 4.
Comparison of postoperative gait during level walking (between groups)
| Parameter | Patient-specific instrumentation | Conventional instrumentation | p value |
|---|---|---|---|
| Spatiotemporal | |||
| Double limb support (%) | 45 (28–90) | 43 (28–58) | > 0.05 |
| Single limb support (%) | 44 (34–74) | 43 (30–54) | > 0.05 |
| Walking speed (m/second) | 0.75 (0.28–1) | 0.76 (0.5–1.1) | > 0.05 |
| Cadence (steps/m) | 93 (54–117) | 95 (75–122) | > 0.05 |
| Stride length (m) | 0.95 (0.6–1.16) | 0.96 (0.1–1.16) | > 0.05 |
| Kinematics/kinetics | |||
| Knee varus angle (degrees) | 6.3 (−6 to 16) | 6 (−3 to 16) | > 0.05 |
| Knee valgus angle (degrees) | −4.5 (−17 to 5) | −5.8 (−12 to 4) | > 0.05 |
| Knee varus moment (Nm/kg) | 0.4 (0.2–0.7) | 0.38 (0.1–0.7) | > 0.05 |
| Knee valgus moment (Nm/kg) | −0.05 (−0.2 to 0) | −0.1 (−0.2 to 0) | > 0.05 |
| Knee power generation (W/kg) | 0.2 (0.02–0.5) | 0.2 (0.01–0.7) | > 0.05 |
| Ankle power generation (W/kg) | 2.3 (0.4–3.6) | 2.2 (0.9–4.1) | > 0.05 |
Values are represented as mean (range).