Evaluation of outcome after primary median and/or ulnar nerve(s) repair at wrist: clinical, functional, electrophysiologic, and ultrasound study

Egyptian Rheumatology and Rehabilitation

Table 3 Correlation between functional outcome measures and SNAP amplitude, CMAP amplitude, MRC score, sensory assessment by MRC score, grip, and pinch strength

Clinical measure		DASH score	Hyperesthesia score	Patient's opinion of recovery
Functional measure		DASH score	Hyperesthesia score	Patient's opinion of recovery
SNAP amplitude (μs)	r_s	− 0.080	− 0.159	0.079
SNAP amplitude (μs)	p	0.643	0.346	0.641
% of regeneration	r_s	0.106	− 0.206	− 0.177
% of regeneration	p	0.675	0.222	0.482
MRC score for muscle power (0–5)	r_s	− 0.425	0.116	0.423
MRC score for muscle power (0–5)	p	0.089	0.636	0.071
Sensory assessment by MRC score (S0–S4)	r_s	− 0.543	0.322	0.502
Sensory assessment by MRC score (S0–S4)	p	0.016*	0.179	0.029*
Grip strength	r_s	− 0.743	0.250	0.713
Grip strength	p	0.001*	0.136	0.001*
Pinch strength	r_s	− 0.520	0.092	0.555
Pinch strength	p	0.001*	0.586	0.001*

r_s Spearman coefficient, MRC Medical Research Council, μV microvolt, SNAP sensory nerve action potential
*Statistically significant at p ≤ 0.05