Chronological (SoE: V) | Angular (SoE: VI) | Topographic (SoE: V) | ||||
---|---|---|---|---|---|---|
Age at diagnosis (years.months) | Cobb degrees | Apex | ||||
from | to | |||||
Infantile | 0–2. | Low | Up to 20 | Cervical | – | Disc C6–7 |
Juvenile | 3–9. | Moderate | 21–35 | Cervico-thoracic | C7 | T1 |
Adolescent | 10–17. | Moderate to severe | 36–40 | Thoracic | Disc T1–2 | Disc T11–12 |
Adult | 18+ | Severe | 41–50 | Thoraco-lumbar | T12 | L1 |
Severe to very severe | 51–55 | Lumbar | Disc L1–2 | |||
Very severe | 56 or more |