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Table 1 The Preoperative Electromyography of patient

From: A rapidly progressive foot drop caused by the posttraumatic Intraneural ganglion cyst of the deep peroneal nerve

Motor nerve conduction

Nerve and Site

incubation

amplitude

speed

area

Peronel.L

 Fibila(head)

5.3 ms

0.4 mV

37.6 m/s

1.5mVms

 Popliteal fossa

12.8 ms

0.3 mV

m/s

1.3 mVms

 TAM

2.7 ms

3.0 mV

m/s

17.9mVms

Tibial.R

 Fibula(head)

5.6 ms

21.3 mV

m/s

56.4 mVms

 Popliteal fossa

15.0 ms

20.4 mV

41.5 m/s

60.8 mVms

Peroneal.R

 Fibula(head)

4.0 ms

5.8 mV

41.8 m/s

23.7mVms

 Popliteal fossa

11.4 ms

5.1 mV

m/s

21.9mVms

Tibial.L

 Fibula(head)

6.7 ms

20.8 mV

m/s

49.0 mVms

 Popliteal fossa

16.1 ms

16.0 mV

40.8 m/s

42.4 mVms

F wave

 

M Wave Latency

F Wave Latency

F-M wave interval

F Wave Occurrence rate

Tibial.L

6.1

55.3

49.2

100

Sensory nerve conduction

 Nerve and Site

incubation

amplitude

speed

Sural.L

 Fibula(head)

3.4 ms

7.2 μV

38.8 m/s

Superficial peroneal.L

 Fibula(head)

2.7 ms

14.7 μV

47.7 m/s

Sural.R

 Fibula(head)

2.5 ms

18.0 μV

46.7 m/s

Superficial peroneal.R

 Fibula(head)

2.1 ms

20.9 μV

49.5 m/s

  1. EMG Electromyography showed a left deep peroneal nerve axonal neuropathy, decreased nerve conduction velocity, and motor amplitude and denervation potential in the EHL extensor hallucis longus and TA tibialis anterior muscles