Evaluation of axonal loss in ulnar sensory nerve fibers recorded from ring and little fingers secondary to idiopathic carpal tunnel syndrome in Egyptian patients

Egyptian Rheumatology and Rehabilitation

Table 2 Comparison of nerve conduction study parameters between case and control groups

NCS parameters	Patients (n = 183 hands)	Control (n = 92 hands)	t	p
Median motor
MM DL	4.07 ± 1.3	3.24 ± 0.4	5.986	< 0.0001*
MM amp	8.04 ± 2.8	9.4 ± 2.5	− 3.946	< 0.0001*
MM CV	56.8 ± 6.3	58.43 ± 5.4	− 1.543	0.124
Median sensory D2
MS PL	3.79 ± 1.05	2.87 ± 0.3	5.207	< 0.0001*
MS amp	33.7 ± 19.8	48.8 ± 15.1	− 4.840	< 0.0001*
MS CV	47.35 ± 11.5	59.7 ± 6.05	− 9.710	< 0.0001*
Ulnar motor
UM DL	2.53 ± 0.4	2.43 ± 0.4	1.817	0.070
UM amp	9.11 ± 2.7	9.22 ± 1.9	− 0.343	0.732
UM CV	61.27 ± 2.5	62.5 ± 5.3	− 1.788	0.075
Ulnar sensory D5
US PL	2.52 ± 0.3	2.44 ± 0.25	2.230	0.027*
US amp	26.33 ± 16.4	35.23 ± 19.1	− 4.014	< 0.0001*
US CV	57.7 ± 6.7	61.2 ± 5.7	− 4.291	< 0.0001*
Median vs. ulnar D4
ML4	3.81 ± 1.15	2.72 ± 0.38	8.865	< 0.0001*
Mamp4	20 ± 12.3	31.62 ± 13.8	− 7.095	< 0.0001*
MCV4	44.2 ± 12.5	58.7 ± 7.2	− 10.238	< 0.0001*
UL4	2.73 ± 0.4	2.57 ± 0.3	3.429	0.001*
Uamp4	18.52 ± 12.86	23.06 ± 14.2	− 4.042	< 0.0001*
UCV4	58.16 ± 8.4	62.3 ± 6.76	− 4.146	< 0.0001*

DL distal latency, amp amplitude, CV conduction velocity, MM median motor, MS median sensory, PL peak latency, D5 digit five recording, D4 digit four recording, ML4 median latency recorded from 4th digit, Mamp4 median amplitude recorded from 4th digit, MCV4 median conduction velocity recorded from 4th digit, UL4 ulnar latency recorded from 4th digit, Uamp4 ulnar amplitude recorded from 4th digit, UCV4 ulnar conduction velocity recorded from 4th digit
*p is significant at ≤ 0.05