Lenke et al reported a classification for adolescent idiopathic scoliosis. Characterizing the features of a patient's scoliosis aids in treatment planning. The authors are from Barnes-Jewish Hospital and Washington University in St. Louis.
Analysis: sagittal radiograph of thoracic spine from T5 to T12, with measurements from the superior end-plate of T5 to the inferior end-plate of T12
The normal sagittal thoracic alignment from the T5 to T12 has a range from 10 to 40 degrees.
Degrees
Term
Designation
< 10 degrees
hypokyphosis
"-"
10 to 40 degrees
normal
"N"
> 40 degrees
hyperkyphosis
"+"
The final classification in the Lenke system is a concatenation of:
(1) the curve type, from Type 1 to Type 6
(2) the lumbar spine modifier, from A to C
(3) the thoracic sagittal alignment modifier
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