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Table 3 Muscles main optimal features

From: Implanted functional electrical stimulation: case report of a paraplegic patient with complete SCI after 9 years

Muscle

Thresholds

MRC

Remarks

Left TA

1 mA

5 (@2 mA)

Dorsiflexion alone

Right TA

450 μA

5 (@2 mA)

Eversion then dorsiflexion

Left QU

450 μA

4+ (22 N.m) (@3.15 mA, 601.6 μs)

High fatigue, incomplete knee locking, triple reflex may occur

Right QU

1.1 mA

3- (14.5 N.m) (@3.15 mA, 601.6 μs)

Fatigue resistant

Left HA

7 mA

1 (@12 mA)

Triple reflex appears above 12 mA

Right HA

NA

 

Not responding to stimulation but diffusion occurs

Left GMe

2 mA

 

Intermittent contraction due to contact problem

Right GMe

8.5 mA

19 mA (saturation)

Nice progressive and selective contraction

Left GMa

11 mA

25.5 mA

Low contraction located on the top of the muscle

Right GMa

1.5 mA

10 mA (saturation)

Nice progressive and selective contraction

Left IL

10 mA

18 mA (optimum)

For higher intensities diffusion to abdominal muscles

Right IL

7.5 mA

20 mA (optimum)

Below some diffusion occurs to abdominal muscles and above to QU

  1. All the measurements, except if noted are performed using a 25Hz frequency and 502.4 μs pulse width, the nominal parameter values. MRC cannot be evaluated for GMe, GMa and IL.