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Medullary kinking index and obex position measurements by clinical status and syringomyelia. Values are listed as (mean/median, SD).
| Medullary Kinking Index (%) | Obex Position (mm) | |
|---|---|---|
| Symptomatic | 49.6/47.8 (12) | 3.4/3.4 (0.7) |
| Asymptomatic | 43.3/42/2 (7.7) | 3.5/3.4 (0.8) |
| SM present | 47/46.9 (11.5) | 4.1/4.2 (0.8) |
| SM absent | 46.2/46.4 (7.3) | 3.2/3.3 (0.6) |
