Introduction of the Novel Radiographic Line (L5-Kyphosis Apex Line) Intended to Evaluate Scheuermann’s Disease and Postural Kyphosis Progression on Standard Lateral X-Rays
- Author:
Tomer BEZALEL
1
;
Eli CARMELI
;
Leonid KALICHMAN
Author Information
- Publication Type:Clinical Study
- From:Asian Spine Journal 2020;14(3):350-356
- CountryRepublic of Korea
- Language:English
-
Abstract:
Methods:In the cross-sectional segment, 150 initial lateral X-rays of patients with Scheuermann’s disease and postural kyphosis were analyzed, and 80 additional X-rays were analyzed in the follow-up segment. The data taken from the X-rays of the whole spinal column included the thoracic kyphosis angle, the C7 plumb line, and the L5-KAL. Clinical data included a numerical rating scale of self-perceived body image, pain, and a Scoliosis Research Society-22 questionnaire (SRS-22).
Results:Significant positive associations were observed in a cross-sectional study between the L5-KAL and thoracic kyphosis, lumbar lordosis, C7 line, and self-perceived body image. In the follow-up nested study, in a mixed analysis of variance, the main effect of time was significant for the L5-KAL, kyphotic deformity and SRS-22, which indicated a change in these parameters after treatment of Scheuermann’s disease patients. Significant positive associations were observed between the changes in L5-KAL and the changes in thoracic kyphosis.
Conclusions:Our evidence suggests that the L5-KAL can serve as an indicator of the thoracic curve change in Scheuermann’s disease and postural kyphosis patients and should be considered in clinical practice.
