Table 3 Comparison of the difference and correlation between radiographic and EMS measurements
From: Accuracy and reliability of tridimensional electromagnetic sensor system for elbow ROM measurement
Range of motion | Radiographic measurement Mean ± SD (°) | EMS measurement Mean ± SD (°) | Pearson correlation coefficient between both methods (p value) |
|---|---|---|---|
Extension | 2.7 ± 2.0 | 4.7 ± 3.0 | 0.41 (p = 0.012) |
Flexion | 130.8 ± 4.5 | 131.8 ± 13.0 | 0.56 (p = 0.0004) |