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Table 1 Clinical and neurophysiological findings of previous case reports which describe syringomyelia presenting as foot drop

From: Chiari malformation type 1 presenting as unilateral progressive foot drop: a case report and review of literature

 

Panda AK et al. [8]

Saifudheen K et al. [9]

McMillan HJ et al. [10]

Narry Muhn et al. [11]

Ilya Laufer et al. (Case 2) [12]

Patient described in this case report

Case 1

Case 2

Age at presentation (years)

16

14

5

4.5

5.5

9

6

Main complaint

Rapidly progressive right sided foot drop for 2 months

Rapidly progressive bilateral foot drop for 1 week

Left foot drop for 2 months

Abrupt onset right foot drop

Rapidly progressive left foot drop

Right foot weakness for 1 month

Rapidly progressive left foot drop for 1 month

Muscle power (Affected limb) Out of 5

Hip

Flexors

5

N/C

5

N/C

Normal

5

5

Extensors

5

N/C

5

N/C

Normal

5

5

Ankle

Dorsi-flexion

0

N/C

0

1

Weak

5

0

Plantar flexion

3

N/C

4+

N/C

Normal

2

3

Reflex

Knee

Diminished

Diminished

Normal

Absent

Absent

Absent

Diminished

Ankle

Absent

Diminished

Absent

Absent

Diminished

Diminished

Absent

Nerve conduction

Common fibular nerve

Latency

3 mV

Normal

4.2 mV

5.4 mV

Normal

N/C

2.8 mV

Amplitude

2.6 ms

Low

1.5 ms

2.6 ms

low

N/C

3.3 ms

Velocity

43.1 m/s

Normal

44 m/s

45 m/s

Normal

N/C

59 m/s

Tibial nerve

Normal

Normal

Normal

Normal

Normal

N/C

Normal

Electromyography

Fibrillation waves in right TA, PL, MG, GM

Fibrillation waves in TA, MG

Fibrillation waves in right TA, PL, MG, GM

Active denervation of TA

Fibrillation waves in TA, TP, MG

N/C

Fibrillation waves in left TA. Left MG was Normal

  1. Note: TA Tibialis Anterior, PL Peronius Longus, MG Medial Gastrocnemius, GM Gluteus Medius, TP Tibialis Posterior, N/C Not Commented