PMC6315061_01
Propriospinal Myoclonus. Sudden and involuntary movements consisting in repetitive flexor and extensor arrhythmic and anarchic brief jerks of the trunk. The movements are spontaneous, painless and with no facial involvement.
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v01
C1-C2 myelopathy due to Arnold-Chiari malformation (ACM) type 1 was evidenced by magnetic resonance imaging (MRI) (Figure 1). Cerebral MRI did not show any ischemic lesions and the neurosonological study did not indicate increased risk of stroke.