Table 1: Symptoms of type I chiari malformation and preoperative radiological findings.
|
Number |
Percentage |
|
Gender |
Female |
25 |
54.3% |
Male |
21 |
45.7% |
|
Pain |
18 |
39.1% |
|
Motor Deficit |
19 |
41.3% |
|
Sensory Deficit |
23 |
50.0% |
|
Sphincter Disorder |
1 |
2.2% |
|
Another Symptoms |
30 |
65.2% |
|
Headache |
25 |
54.3% |
|
Motor Neuron Upper/Lower |
16 |
34.8% |
|
Brainstem Cranial Nerve Involvement |
6 |
13.0% |
|
Cerebellar Involvement |
16 |
34.8% |
|
Hydrocephalus Symptom |
2 |
4.3% |
|
Preoperative Syrinx |
|
22 |
47.8% |
Syrinx Segment |
None |
24 |
52.2% |
Cervical |
10 |
21.7% |
|
Cervicothoracic |
10 |
21.7% |
|
Holocord |
2 |
4.3% |
|
Preoperative Tonsiller Level |
C1 |
25 |
54.3% |
C2 |
6 |
13.0% |
|
C1-C2 compound |
7 |
15.2% |
|
C2-C3 compound |
1 |
2.2% |
|
Foramen Magnum-C1 |
7 |
15.2% |
|
Osseous Anomaly |
None |
44 |
95.7% |
Platibazi |
1 |
2.2% |
|
Scoliosis |
1 |
2.2% |
|
Preoperative Sisterna Magna |
None |
38 |
82.6% |
Minimal |
8 |
17.4% |
|
Preoperative Obex |
Unaware |
29 |
63.0% |