Table 2 Ultrasonic evaluation outcomes at baseline and 3 month after the procedure in two groups

Flattening ratio of median nerve at the level of hamate bone

3.45 ± 0.75

3.18 ± 0.56^a

3.42 ± 0.81

3.30 ± 0.41^a,b

Cross-sectional area of the MN at the level of pisiform bone (cm²)

0.14 ± 0.02

0.10 ± 0.01^a

0.14 ± 0.02

0.12 ± 0.01^a,b

TCL thicknesses on the cross-section at the level of hamate bone (cm)

0.31 ± 0.07

0.15 ± 0.06a

0.32 ± 0.04

0.18 ± 0.05^a,b