. Author manuscript; available in PMC: 2021 Jun 1.

Published in final edited form as: Muscle Nerve. 2020 Jan 13;61(6):726–739. doi: 10.1002/mus.26797

Table 1.

Medical Research Council (MRC) scale

Sensory Function¹¹³	S0	absence of sensibility in the autonomous area of the nerve
	S1	recovery of deep cutaneous pain and tactile sensibility
	S1+	recovery of superficial pain sensibility
	S2	recovery of some degree of superficial cutaneous pain and tactile sensibility
	S2+	as in S2, but with over response
	S3	return of pain and tactile sensibility with disappearance of over response, s2-PD: >15mm
	S3+	return of sensibility as in S3 with some recovery of 2-point discrimination, s2-PD: 7–15mm
	S4	complete recovery, s2-PD: 2–6mm
Motor Function¹¹⁴	M0	no contraction
	M1	flicker or trace of contraction
	M2	full range of active movement, with gravity eliminated
	M3	active movement against gravity
	M4	active movement against gravity and resistance
	M5	normal power

Abbreviations: S2-PD: static two-point discrimination test