Table 3.

Clinical, neurophysiological, and ultrasonographic data: lower limbs.

		No/minimal impairment (independent)	Moderate impairment (independent/unilateral support)	Severe impairment (bilateral support/wheelchair)	p value
Peroneal nerve
Motor CV (m/sec)	CIDP	40.4 ± 1.3	26.7 ± 14.7a	21.0 ± 13.4	0.006
	MMN	40.7 ± 6.8	37.2 ± 5.5	33.9 ± 3.1	0.099
CMAP amplitude (mV)	CIDP	4.4 ± 3.0	1.7 ± 1.4a	0.1 ± 0.2	0.016
	MMN	3.1 ± 2.1	2.8 ± 1.8	1.1 ± 1.2	0.110
CSA popliteal fossa (mm2)	CIDP	12.2 ± 3.1	17.9 ± 3.5a	16.7 ± 2.0	0.045
	MMN	10.5 ± 1.5	17.3 ± 4.3	14.0 ± 1.9	0.114
CSA fibular head (mm2)	CIDP	8.8 ± 1.7	11.5 ± 3.0	11 ± 1.3	0.227
	MMN	7.8 ± 1.5	10.5 ± 2.3	9.3 ± 2.3	0.112
Tibial nerve
Motor CV (m/sec)	CIDP	39.4 ± 6.6	32.7 ± 12.5	33.9 ± 0.9	0.121
	MMN	37.4 ± 3.6	34.6 ± 4.5	35.9 ± 4.0	0.234
CMAP amplitude (mV)	CIDP	3.9 ± 2.1	1.7 ± 2.4b	0.3 ± 0.1	0.036
	MMN	3.8 ± 1.1	2.3 ± 1.3	2.2 ± 2.7	0.048
CSA popliteal fossa (mm2)	CIDP	15.9 ± 3.8	26.7 ± 4.1	19.7 ± 3.9	0.037
	MMN	15.4 ± 3.9	23.8 ± 4.8	17.8 ± 2.2	0.241
CSA ankle (mm2)	CIDP	12.6 ± 2.1	15.7 ± 3.8	11.8 ± 2.5	0.254
	MMN	12.1 ± 2.4	14.5 ± 3.5b	8.7 ± 2.0	0.032
Sural nerve
Sensory CV (m/sec)	CIDP	51.7 ± 3.3	25.1 ± 18.7	20.3 ± 18.3	0.255
	MMN	48.8 ± 7.8	45.4 ± 1.6	44.4 ± 4.3	0.441
SNAP amplitude (μV)	CIDP	4.5 ± 2.3	3.4 ± 3.7	1.7 ± 2.9	0.111
	MMN	10.3 ± 6.1	9.9 ± 4.8	11.3 ± 5.4	0.638
CSA ankle (mm2)	CIDP	3.3 ± 0.3	3.7 ± 0.8	3.3 ± 0.2	0.928
	MMN	3.0 ± 1.1	2.7 ± 0.4	2.7 ± 0.5	0.958

Results are reported as average ± standard deviation.

CMAP: compound muscle action potential.

CSA: cross-sectional area.

CV: conduction velocity.

SNAP: sensory action potential.

INCAT (inflammatory neuropathy cause and treatment) lower limbs score: no/minimal impairment = 0; moderate impairment = 1-2; severe impairment = 3–5.

^aSignificant difference (p < 0.05) versus “no/minimal impairment.”

^bSignificant difference (p < 0.05) versus “severe impairment.”