Table 3.
Clinical and ultrasound findings of healthy subjects and patients with carpal tunnel syndrome.
| Healthy subjects | Patients with CTS before injection | Patients with CTS after injection | |
|---|---|---|---|
| VAS | 0.00 ± 0.00 | 6.42 ± 2.67* | 2.67 ± 2.24§ |
| Wrist width (cm) | 3.43 ± 0.34 | 3.27 ± 0.19 | 3.24 ± 0.15 |
| TCL thickness (cm) | 0.08 ± 0.01 | 0.10 ± 0.02* | 0.10 ± 0.01 |
| CSA (mm2) | 8.70 ± 1.32 | 13.97 ± 3.27* | 11.03 ± 3.17§ |
| Aspect ratio of MER | 3.10 ± 0.62 | 3.23 ± 0.53 | 3.34 ± 0.80 |
| Perimeter (cm) | 1.08 ± 0.14 | 1.44 ± 0.19* | 1.30 ± 0.14 |
| NU of displacement (%) | 18.67 ± 5.59 | 13.02 ± 4.42* | 14.39 ± 5.46 |
| NU of area (%) | 43.40 ± 3.28 | 24.64 ± 11.76* | 32.05 ± 11.93§ |
| NU of aspect ratio of MER (%) | 64.57 ± 7.02 | 58.43 ± 21.54 | 52.86 ± 19.34 |
| NU of perimeter (%) | 36.55 ± 4.10 | 20.71 ± 12.35* | 21.84 ± 7.28 |
CTS carpal tunnel syndrome; TCL transverse carpal ligament; CSA cross-sectional area of median nerve at proximal carpal tunnel; MER minimum-enclosing rectangle.
*P < 0.05 compared with ultrasound findings in healthy subjects.
§P < 0.05 compared with ultrasound findings in patients with CTS before injection.