Dancers (n=62) | Non-dancers (n=109) | P value | |||||
Mean | ±SD | (Range) | Mean | ±SD | (Range) | ||
Characteristic | |||||||
Age at US | 19 | ±6.32 | (12–40.4) | 24.2 | ±10.94 | (12–63.8) | 0.001 |
Beighton score | 5.5 | ±2.32 | (0–9) | 4.5 | ±2.44 | (0–9) | 0.01 |
Hypermobility (frequency, %) | 40 | (65%) | 49 | (45%) | 0.02 | ||
Height (cm) | 163 | ±7.59 | (147.8–183) | 166.2 | ±6.96 | (149.3–186) | 0.02 |
Weight (kg) | 60 | ±12.52 | (33.4–100.3) | 63.7 | ±11.09 | (44.1–101.8) | 0.03 |
BMI | 22 | ±3.71 | (15.3–35.7) | 23 | ±3.42 | (16.4–34.6) | 0.16 |
Radiographic | |||||||
Version | 14 | ±8.86 | (–9–37) | 17.6 | ±13.68 | (–13–60) | 0.15 |
LCEA | 24 | ±6.10 | (10–36) | 24.8 | ±7.09 | (3–49) | 0.73 |
ACEA | 23 | ±6.80 | (7–38) | 23.3 | ±7.94 | (7–50) | 0.93 |
Tönnis angle | 10 | ±4.81 | (1–22) | 8.6 | ±5.73 | (–5–29) | 0.07 |
Dynamic US | |||||||
Neutral flexed | 5.4 | ±2.44 | (0–14) | 4.4 | ±2.56 | (–1.2–13.9) | 0.02 |
Neutral | 2.5 | ±2.72 | (–1.2–14) | 2.1 | ±2.33 | (–3.3–11.8) | 0.24 |
EER flexed | 6.3 | ±2.23 | (2.8–12) | 5.2 | ±2.53 | (0–14.3) | 0.01 |
Max US – Min US | 4.2 | ±1.63 | (0.6–9) | 3.6 | ±1.73 | (0–7.9) | 0.03 |
ACEA, anterior centre edge angle; BMI, body mass index; EER, external rotation; LCEA, lateral centre edge angle; ; US, ultrasound.