Evidence brief
The Lenke Classification of Adolescent Idiopathic Scoliosis
Curve type (1-6) based on structural criteria on bending films
Lumbar modifier (A, B, C) based on CSVL position
Thoracic sagittal modifier (-, N, +) based on T5-T12 kyphosis
Guides surgical planning and fusion levels
Replaced King classification with better reliability
The Lenke classification provides a systematic approach to AIS that guides surgical planning, including determination of fusion levels and approach selection.
Must understand Lenke classification for scoliosis viva. Curve types 1-6, lumbar modifier A/B/C, sagittal modifier -/N/+. Key concept: structural vs non-structural curves on bending films. Type 1 curves most common. Know indications for anterior release.
Lenke LG et al. Adolescent idiopathic scoliosis: a new classification to determine extent of spinal arthrodesis. J Bone Joint Surg Am. 2001;83(8):1169-1181.
Level IV
Case series or case reports