Demographics
Characteristic Mean ± SD Mean ± SD
Age at diagnosis 29.92 ± 15.03 29.92 ± 15.03
Characteristic n %
Male 55 55.0
Female 45 45.0
Signs and Symptoms Signs and Symptoms Signs and Symptoms
Characteristic Mean ± SD Mean ± SD
Time elapsed from onset (mo) 111.33± 118.75 111.33± 118.75
Characteristics n %
Hydrosyringomyelia 34 34.0
Retrocurved odontoid 8 8.0
Headaches 62 62.0
Occipital headache/cervicalgia 30 30.0
Dizziness 9 9.0
Vertigo 8 8.0
Visual alterations 3 3.0
Kyphoscoliosis 8 8.0
Sensory loss 18 18.0
Motor weakness 12 12.0
Gait disturbances 13 13.0
Paresthesia/pain upper limbs 13 13.0
Paresthesia/pain lower limbs 15 15.0
Therapeutic procedures Therapeutic procedures Therapeutic procedures
Characteristic n %
Surgical treatment 50 50.0