Background
Definition
Abnormal posteriorly directed sagittal plane curve of spine
Scoliosis Research Society
Thoracic
Normal range thoracic kyphosis is 20-40°
- measured over T1 to T12 by Cobb method
- upper limit of normal thoracic kyphosis < 45°
Cervical & Lumbar
- lordosis is normal
- any kyphosis (>5°) considered abnormal