Table 3.

Brink scoring system

Muscle function dimension	Score
Squeeze pressure	1 = None
	2 = Weak squeeze, felt as a flick at various points along the finger surface: not all the way around
	3 = Moderate squeeze; felt all the way around the finger surface
	4 = Strong squeeze; full circumference of fingers compressed
Muscle contraction duration	1 = None
	2 = Less than 1 s
	3 = Greater than 1 s but less than 3 s
	4 = Greater than 3 s
Vertical displacement	1 = None
	2 = Finger moves anteriorly
	3 = Whole length of finger move anteriorly
	4 = Whole fingers move anteriorly, are gripped, and pulled in
Total	Range 3–12