Peripheral Nerve Ultrasonography in Chronic Inflammatory Demyelinating Polyradiculoneuropathy and Multifocal Motor Neuropathy: Correlations with Clinical and Neurophysiological Data

Table 1

Control group ultrasonographic data (70 subjects).

Nerve	Site	Average CSA (mm^2)	Standard deviation
Peroneal	Popliteal fossa	8.91	1.82
	Fibular head	7.42	2.11
Tibial	Popliteal fossa	9.62	3.20
	Ankle	8.89	2.05
Sural	Ankle	2.15	0.62
Median	Wrist	8.07	1.30
	Middle third of the forearm	7.05	1.98
	Elbow	9.62	1.45
	Middle third of the arm	8.50	1.67
		10.33	1.22
	Intranerve variability	1.76	0.47
	Side-to-side intranerve variability	1.27	0.17
Ulnar	Wrist	4.82	1.04
	Middle third of the forearm	6.07	1.42
	Elbow	5.94	1.82
	Middle third of the arm	7.31	1.79
		8.75	2.09
	Intranerve variability	1.74	0.71
	Side-to-side intranerve variability	1.25	0.13

CSA: cross-sectional area.