Table 4 Range of motion data separated by age
Age | p value | ||||||
|---|---|---|---|---|---|---|---|
< 30 | 30–39 | 40–49 | 50–59 | 60–69 | ≥ 70 | ||
n—external rotation | 35 | 76 | 255 | 346 | 132 | 12 | |
Initial external rotation (°) | 30.2 | 34.1 | 28.1 | 29.7 | 32.4 | 36.5 | 0.13 |
Last recorded external rotation (°) | 56.1 | 61.9 | 57.3 | 57.5 | 57.1 | 53.6 | 0.54 |
External rotation gain (°) | 25.9 | 27.8 | 29.2 | 27.8 | 24.7 | 17.1 | 0.35 |
Days between delivery and last recorded measurement | 66.0 | 72.3 | 66.5 | 73.3 | 63.9 | 82.0 | 0.04 |
n—abduction | 26 | 49 | 197 | 266 | 100 | 9 | |
Initial abduction (°) | 82.9 | 86.5 | 82.9 | 83.3 | 86.7 | 88.2 | 0.90 |
Last recorded abduction (°) | 110.3 | 129.8 | 124.2 | 119.1 | 114.5 | 107.6 | < 0.01 |
Abduction gain (°) | 27.4 | 43.3 | 41.3 | 35.8 | 27.8 | 19.4 | < 0.01 |
Days between delivery and last recorded measurement | 65.5 | 72.6 | 65.2 | 72.5 | 64.2 | 82.1 | 0.12 |
n—forward flexion | 14 | 39 | 138 | 167 | 70 | 5 | |
Initial forward flexion (°) | 124.1 | 120.1 | 102.6 | 107.3 | 105.4 | 118.2 | 0.03 |
Last recorded forward flexion (°) | 136.6 | 145.9 | 135.6 | 134.7 | 137.3 | 150.8 | 0.24 |
Forward flexion gain (°) | 12.5 | 25.8 | 33.0 | 27.4 | 31.9 | 32.6 | 0.21 |
Days between delivery and last recorded measurement | 54.4 | 73.3 | 65.7 | 73.4 | 70.9 | 97.2 | 0.06 |
n—internal rotation | 7 | 23 | 74 | 94 | 40 | 7 | |
Initial internal rotation (°) | 33.6 | 47.5 | 44.5 | 43.8 | 49.3 | 54.0 | 0.31 |
Last recorded internal rotation (°) | 48.3 | 55.1 | 59.3 | 58.4 | 53.9 | 57.0 | 0.51 |
Internal rotation gain (°) | 14.7 | 7.6 | 14.8 | 14.6 | 4.6 | 3.0 | 0.23 |
Days between delivery and last recorded measurement | 53.3 | 75.9 | 61.6 | 74.5 | 68.6 | 90.0 | 0.06 |