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Table 3 Highest strength obtained for each movement using an adapted Medical Research Council (MRC) scale. This table presents the highest MRC grades obtained. The range of current is the one that enables recruitment modulation (0–100%). These configurations reach the maximum recruitment i.e. 100% based on EMG recordings (fingers and thumb flexions only) and MRC scaling (all)

From: Selective neural electrical stimulation restores hand and forearm movements in individuals with complete tetraplegia

Median nerve

Patient

Wrist flexion

Fingers flexion

Thumb flexion

Thumb opposition

Forearm pronation

P5

MRC < 3

680 μA–1640 μA

TL(B1)

MRC < 3

800 μA–1640 μA

BP(AC)

MRC < 2

1440 μA–1920 μA

TT(B4)

MRC < 2

680 μA–1640 μA

TTR(B4)

Not Obtained

P6

MRC < 4

400 μA–720 μA

TL(B1)

MRC < 4

400 μA–720 μA

TL(B1)

MRC < 4

480 μA–720 μA

TL(B1)

Not Obtained

MRC < 4

747 μA–1120 μA

TT(A1)

P7

MRC < 4

40 μA–400 μA

Ring

MRC < 4

240 μA–400 μA

TL(B1)

MRC < 4

240 μA–400 μA

TL(B3)

MRC < 4

93 μA- 700 μA

TT(A1)

MRC < 4

40 μA–400 μA

TTR(B2)

P8

MRC < 4

560 μA–933 μA

TT(A4)

MRC < 4

240 μA–400 μA

TLR(B2)

MRC < 4

240 μA–400 μA

STR(B2)

MRC < 3

240 μA–400 μA

TL(B3)

MRC < 4

240 μA–400 μA

TL(B4)