TY - JOUR
T1 - CT analysis of the posterior anatomical landmarks of the scoliotic spine
AU - Tromp, I. N.
AU - Brink, R. C.
AU - Homans, J. F.
AU - Schlösser, T. P.C.
AU - van Stralen, M.
AU - Kruyt, M. C.
AU - Chu, W. C.W.
AU - Cheng, J. C.Y.
AU - Castelein, R. M.
N1 - Funding Information:
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: R.M. Castelein reports financial support was provided by unrestricted K2M research grant. I.N. Tromp reports a relationship with Cotrel Foundation that includes: funding grants. I.N. Tromp reports a relationship with Eurospine TFR grant that includes: funding grants. R.M. Castelein reports a relationship with Cotrel Foundation that includes: funding grants. R.M. Castelein reports a relationship with Eurospine TFR grant that includes: funding grants. R.M. Castelein reports a relationship with unrestricted K2M research grant that includes: funding grants.
Publisher Copyright:
© 2022 The Authors
Copyright © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved.
PY - 2022/11
Y1 - 2022/11
N2 - AIM: To use computed tomography (CT) to assess the validity and reliability of the posterior landmarks, spinous processes (SP), transverse processes (TP), and centre of lamina (COL), as compared to the Cobb angle to assess the curve severity and progression of adolescent idiopathic scoliosis (AIS). MATERIALS AND METHODS: A consecutive series of CT examinations of severe AIS patients were included retrospectively. SP, TP, and COL angles were measured for all curves and compared to the Cobb angle. RESULTS: One hundred and five patients were included. The mean Cobb versus SP, TP, and COL angles were, 54° versus 37°, 49°, and 51° in the thoracic curves and 34° versus 26°, 31°, and 34° in the (thoraco)lumbar curves. Intraclass correlation coefficient values for intra-rater measurements of the SP, TP, and COL angles were 0.93, 0.97, and 0.95 and 0.70, 0.90, and 0.88 for inter-rater measurements. The correlations between the Cobb angle and SP, TP, and COL angles in thoracic and (thoraco)lumbar curves were 0.79 and 0.66, 0.87 and 0.84, and 0.80 and 0.70. CONCLUSIONS: The posterior spinal landmarks can be used for assessment of scoliosis severity in AIS; however, they show a systematic underestimation, but a strong correlation with the coronal Cobb angle. TP and COL angles had the highest validity.
AB - AIM: To use computed tomography (CT) to assess the validity and reliability of the posterior landmarks, spinous processes (SP), transverse processes (TP), and centre of lamina (COL), as compared to the Cobb angle to assess the curve severity and progression of adolescent idiopathic scoliosis (AIS). MATERIALS AND METHODS: A consecutive series of CT examinations of severe AIS patients were included retrospectively. SP, TP, and COL angles were measured for all curves and compared to the Cobb angle. RESULTS: One hundred and five patients were included. The mean Cobb versus SP, TP, and COL angles were, 54° versus 37°, 49°, and 51° in the thoracic curves and 34° versus 26°, 31°, and 34° in the (thoraco)lumbar curves. Intraclass correlation coefficient values for intra-rater measurements of the SP, TP, and COL angles were 0.93, 0.97, and 0.95 and 0.70, 0.90, and 0.88 for inter-rater measurements. The correlations between the Cobb angle and SP, TP, and COL angles in thoracic and (thoraco)lumbar curves were 0.79 and 0.66, 0.87 and 0.84, and 0.80 and 0.70. CONCLUSIONS: The posterior spinal landmarks can be used for assessment of scoliosis severity in AIS; however, they show a systematic underestimation, but a strong correlation with the coronal Cobb angle. TP and COL angles had the highest validity.
KW - Adolescent
KW - Humans
KW - Reproducibility of Results
KW - Retrospective Studies
KW - Scoliosis/diagnostic imaging
KW - Spine/diagnostic imaging
KW - Thoracic Vertebrae/diagnostic imaging
KW - Tomography, X-Ray Computed
UR - http://www.scopus.com/inward/record.url?scp=85138757676&partnerID=8YFLogxK
U2 - 10.1016/j.crad.2022.07.013
DO - 10.1016/j.crad.2022.07.013
M3 - Article
C2 - 36064659
AN - SCOPUS:85138757676
SN - 0009-9260
VL - 77
SP - 876
EP - 881
JO - Clinical Radiology
JF - Clinical Radiology
IS - 11
ER -