From: Ultrasonographic median nerve cross-section areas measured by 8-point "inching test" for idiopathic carpal tunnel syndrome: a correlation of nerve conduction study severity and duration of clinical symptoms
Inching
None
i4-i3
i3-i2
i2-i1
i1-W
W-o1
o1-o2
o2-o3
double
Total
N (%)
119
37 (25.9)
55 (38.5)
6 (4.2)
10 (7.0)
8 (5.6)
2 (1.4)
0 (0)
25 (17.4)
262