Table 2.

Results of Routine Peripheral Nerve Ultrasound at Standardized Points.

Nerve and site		CSA (mm2)		Nerve roots		CSA (mm2)
Rt median nerve				Rt C5		5.12 (<7.7)
Wrist		7.23 (<11.9)		Lt C5		6.28 (<7.7)
Forearm		8.45 (<8.6)		Rt C6		13.25 (<12.3)
Elbow		12.94 (<13.5)		Lt C6		8.44 (<12.3)
Upper arm		16.31 (<11.6)		Rt C7		11.34 (<14.2)
Lt median nerve				Lt C7		10..42 (<14.2)
Wrist		8.17 (<11.9)
Forearm		6.86 (<8.6)
Elbow		11.69 (<13.5)
Upper arm		12.38 (<11.6)
Rt ulnar nerve
Guyon (Wrist)		5.15 (<6.1)
Distal sulcus		5.32 (<6.7)
Elbow		4.13 (<6.2)
Upper arm		10.41 (<10.5)
Lt ulnar nerve
Guyon (Wrist)		4.79 (<6.1)
Distal sulcus		5.24 (<6.7)
Elbow		6.89 (<6.2)
Upper arm		9.97 (<10.5)

Data are expressed with reference values (15, 16). Abnormal values are underlined. Rt: right, Lt: left