Table 2.

Needle electromyography at selected spinal levels

Patient	TYPE	SITE	FIB	PSW	Amp	Dur	PP	IP	Recruit	Firing	Denervation
1	MISS	ADJ	0	0	+	+	+	–	N	N	Mild, chronic
1	MISS	INS 1	0	0	N	N	+	N	N	N	None
1	MISS	INS 2	0	0	+	+	+	N	LATE	1+	Mild, chronic
2	MISS	ADJ	0	0	N	N	N	N	N	N	None
2	MISS	INS 1	0	0	N	N	N	N	N	N	None
2	MISS	INS 2	0	0	N	N	N	N	N	N	None
3	MISS	ADJ	0	0	N	N	N	N	N	N	None
3	MISS	INS 1	0	0	N	N	N	N	N	N	None
3	MISS	INS 2	0	0	+	+	+	–	LATE	1+	Mild, chronic
4	MISS	ADJ	0	0	N	N	N	N	N	N	None
4	MISS	INS 1	0	0	+	+	+	–	LATE	1+	Mild, chronic
4	MISS	INS 2	0	0	N	N	N	N	N	N	None
5	MISS	ADJ	0	0	N	N	N	N	N	N	None
5	MISS	INS 1	+	0	+	+	++	–	LATE	1+	Mild, chronic
5	MISS	INS 2	++	0	N	+	N	–	LATE	1+	Severe, acute
6	MISS	ADJ	0	0	N	N	N	N	N	N	None
6	MISS	INS 1	0	0	+	+	+	–	LATE	1+	Mild, chronic
6	MISS	INS 2	0	0	+	+	+	–	LATE	1+	Mild, chronic
7	OSS	ADJ	++	+	+	+	+	–	LATE	1+	Severe, subacute
7	OSS	INS 1	0	0	N	N	N	N	N	N	None
7	OSS	INS 2	+	0	+++	+++	+++	–	LATE	1+	Severe, chronic
8	OSS	ADJ	++	+	+	+	+	–	LATE	1+	Moderate, subacute
8	OSS	INS 1	0	0	N	N	N	N	N	N	None
8	OSS	INS 2	++	+	+	+	+	–	LATE	1+	Severe, chronic
9	OSS	ADJ	0	0	+	+	+	–	LATE	N	Mild, chronic
9	OSS	INS 1	0	0	+	++	N	–	LATE	1−	Moderate, chronic
9	OSS	INS 2	0	0	+	++	N	–	LATE	1−	Moderate, chronic
10	OSS	ADJ	+	0	++	++	+	–	LATE	N	Mild, chronic
10	OSS	INS 1	0	0	N	+	+	N	N	N	Mild, chronic
10	OSS	INS 2	+++	++	+	+	+	–	LATE	1+	Moderate, subacute
11	OSS	ADJ	0	0	N	N	N	N	N	N	None
11	OSS	INS 1	+	0	+	+	+	–	LATE	1+	Mild, chronic
11	OSS	INS 2	0	0	N	N	+	N	N	N	None
12	OSS	ADJ	0	0	+	+	+	–	LATE	1+	Mild, chronic
12	OSS	INS 1	0	0	+	+	++	–	LATE	1+	Mild, chronic

INS 1 instrumented cephalad site, INS 2 instrumented caudal site, ADJ non-instrumented adjacent site, NORM normal, +/−mild abnormality, ++/−− moderate abnormality, +++/−−− severe abnormality, FIB fibrillations, PSW positive sharp waves, Amp amplitude, PP polyphasia, IP interference pattern, Dur duration, Recruit recruitment, firing