Table 1.
Age, BMI, sex, electrophysiological findings, and BCTQ scores, and ultrasound parameters in the control and patient groups.
| Patients with CTS | Controls | p-value | |
|---|---|---|---|
| Age (years) | 46.6 ± 10.5 | 43.6 ± 9.7 | 0.194 |
| BMI (kg/m2) | 23.55 ± 1.03 | 23.27 ± 1.03 | 0.226 |
| Female sex | 34/42 (80.95) | 30/38 (78.95) | 0.823 |
| Distal sensory latency time (ms) | 3.81 ± 2.79 | N.A. | |
| Distal motor latency time (ms) | 4.30 ± 1.15 | ||
| Distal sensory amplitude (μV) | 23.06 ± 14.45 | ||
| Distal motor amplitude (mV) | 9.47 ± 4.81 | ||
| Sensory conduction velocity (m/s) | 41.86 ± 14.45 | ||
| Symptom BCTQ score | 2.86 ± 0.78 | ||
| Functional BCTQ score | 2.41 ± 0.71 | ||
| DRUJ-CSA (mm2) | 8.31 ± 1.26 | 6.63 ± 0.68 | <0.001 |
| p-CSA (mm2) | 16.05 ± 5.73 | 7.23 ± 1.14 | <0.001 |
| h-CSA (mm2) | 11.14 ± 2.98 | 6.74 ± 1.13 | <0.001 |
| ΔCSA (mm2) | 7.74 ± 5.78 | 0.66 ± 1.05 | <0.001 |
| R-CSA | 1.97 ± 0.74 | 1.10 ± 0.16 | <0.001 |
| Flattening ratio of MN at pisiform | 2.70 ± 0.71 | 2.50 ± 0.73 | 0.215 |
| Flexor retinaculum thickness (mm) | 1.13 ± 0.20 | 0.87 ± 0.17 | <0.001 |
| Intraneural vascularity | 20/42 | 0/38 | <0.001 |
Data are presented as mean ± standard deviation or n (%).
BMI, body mass index; BCTQ, Boston Carpal Tunnel Questionnaire; CTS, carpal tunnel syndrome; DRUJ-CSA, cross-sectional area of median nerve at distal radioulnar joint; p-CSA, cross-sectional area of median nerve at pisiform; h-CSA, cross-sectional area of median nerve at hook of hamate; ΔCSA, difference between p-CSA and DRUJ-CSA; R-CSA, ratio of p-CSA and DRUJ-CSA; MN, median nerve; N.A., not applicable.