Table 1. The Rosén and Lundborg protocol for functional assessment.

Sensory Domain
Innervation Critical Sites: Median: Tip of first finger, tip and base of second finger Ulnar: Tip and base of fifth finger, proximal hypothenar	Sammes-Weinstein monofilaments 0=not testable 1=filament 6.65 score range: 0-15 2=filament 4.56 maximum score for the median nerve: 15 3=filament 4.31 maximum score for the ulnar nerve: 15 4=filament 3.61 5=filament=2.83	Score=measured value/maximum score
Tactile Gnosis	Two-point discrimination (s2PD) (Second and fifth finger) 0= > 16 mm score range: 0-3 1=11-15 mm maximum score: 3 2=6-10 mm 3=< 5 mm	Score=measured value/maximum score
	Shape/Texture Identification Test (STI) Score range: 0-6 (Second and fifth finger) maximum score: 6	Score=measured value/maximum score
Dexterity	Sollerman test score range: 0-12 (tasks 4, 8, and 10) maximum score: 12	Score=measured value/maximum score
Mean sensory domain score:		The mean value of the sensory subdomains
Motor Domain
Innervation	Manual muscle test score 0-5 Median: Palmar abduction Ulnar: Abduction of second and fifth finger, adduction of fifth finger Score range for the median nerve: 0-5 Score range for the ulnar nerve: 0-15 Maximum score for the median nerve: 5 Maximum score for the ulnar nerve: 15	Score=measured value /maximum score
Grip strength	Jamar dynamometry (kg) Mean of three consecutive measurements, affected and unaffected hands. Maximum score: Result for the unaffected hand	Score=measured value/maximum score
Mean motor domain score:		The mean value of the motor subdomain scores
Pain/Discomfort Domain
Cold-intolerance or hyperesthesia	Patient perception 0=Not functional score range: 0-3 1=Disturbing maximum score: 3 2=Moderate 3=Functional; only a minor problem	Score=measured value/maximum score
Mean pain/discomfort score:		Mean cold-intolerance and hyperesthesia values
Total Score:		Sum of the scores on the sensory, motor, and pain/discomfort domains