Asymmetry of the Vertebral Body and Pedicles in the True Transverse Plane in Adolescent Idiopathic Scoliosis: A CT-Based Study

Rob C. Brink; Tom P C Schlösser; Dino Colo; Koen L. Vincken; Marijn van Stralen; Steve C N Hui; Winnie C W Chu; Jack C Y Cheng; RM Castelein

doi:10.1016/j.jspd.2016.08.006

Asymmetry of the Vertebral Body and Pedicles in the True Transverse Plane in Adolescent Idiopathic Scoliosis: A CT-Based Study

Rob C. Brink, Tom P C Schlösser, Dino Colo, Koen L. Vincken, Marijn van Stralen, Steve C N Hui, Winnie C W Chu, Jack C Y Cheng, RM Castelein^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Study Design Cross-sectional. Objectives To quantify the asymmetry of the vertebral bodies and pedicles in the true transverse plane in adolescent idiopathic scoliosis (AIS) and to compare this with normal anatomy. Summary of background data There is an ongoing debate about the existence and magnitude of the vertebral body and pedicle asymmetry in AIS and whether this is an expression of a primary growth disturbance, or secondary to asymmetrical loading. Methods Vertebral body asymmetry, defined as left-right overlap of the vertebral endplates (ie, 100%: perfect symmetry, 0%: complete asymmetry) was evaluated in the true transverse plane on CT scans of 77 AIS patients and 32 non-scoliotic controls. Additionally, the pedicle width, length, and angle and the length of the ideal screw trajectory were calculated. Results Scoliotic vertebrae were on average more asymmetric than controls (thoracic: AIS 96.0% vs. controls 96.4%; p =.005, lumbar: 95.8% vs. 97.2%; p

Original language	English
Pages (from-to)	37-45
Number of pages	9
Journal	Spine Deformity
Volume	5
Issue number	1
DOIs	https://doi.org/10.1016/j.jspd.2016.08.006
Publication status	Published - 1 Jan 2017

Keywords

Adolescent idiopathic scoliosis
Axial rotation
CT scan
Pedicle asymmetry
Transverse plane morphology
Vertebral body asymmetry

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10.1016/j.jspd.2016.08.006

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@article{deb79840b2f24f7fa118b8acc7a0866b,

title = "Asymmetry of the Vertebral Body and Pedicles in the True Transverse Plane in Adolescent Idiopathic Scoliosis: A CT-Based Study",

abstract = "Study Design Cross-sectional. Objectives To quantify the asymmetry of the vertebral bodies and pedicles in the true transverse plane in adolescent idiopathic scoliosis (AIS) and to compare this with normal anatomy. Summary of background data There is an ongoing debate about the existence and magnitude of the vertebral body and pedicle asymmetry in AIS and whether this is an expression of a primary growth disturbance, or secondary to asymmetrical loading. Methods Vertebral body asymmetry, defined as left-right overlap of the vertebral endplates (ie, 100%: perfect symmetry, 0%: complete asymmetry) was evaluated in the true transverse plane on CT scans of 77 AIS patients and 32 non-scoliotic controls. Additionally, the pedicle width, length, and angle and the length of the ideal screw trajectory were calculated. Results Scoliotic vertebrae were on average more asymmetric than controls (thoracic: AIS 96.0% vs. controls 96.4%; p =.005, lumbar: 95.8% vs. 97.2%; p ",

keywords = "Adolescent idiopathic scoliosis, Axial rotation, CT scan, Pedicle asymmetry, Transverse plane morphology, Vertebral body asymmetry",

author = "Brink, {Rob C.} and Schl{\"o}sser, {Tom P C} and Dino Colo and Vincken, {Koen L.} and {van Stralen}, Marijn and Hui, {Steve C N} and Chu, {Winnie C W} and Cheng, {Jack C Y} and RM Castelein",

note = "Funding Information: RCB (none); TPCS (none); DC (none); KLV (none); MvS (none); SCNH (none); WCWC (none); JCYC (none); RMC (grants from Alexandre Suerman UMC Utrecht PhD grant, grants from K2M research grant, grants from Medtronic research grant, outside the submitted work). Publisher Copyright: {\textcopyright} 2016 Scoliosis Research Society",

year = "2017",

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doi = "10.1016/j.jspd.2016.08.006",

language = "English",

volume = "5",

pages = "37--45",

number = "1",

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TY - JOUR

T1 - Asymmetry of the Vertebral Body and Pedicles in the True Transverse Plane in Adolescent Idiopathic Scoliosis

T2 - A CT-Based Study

AU - Brink, Rob C.

AU - Schlösser, Tom P C

AU - Colo, Dino

AU - Vincken, Koen L.

AU - van Stralen, Marijn

AU - Hui, Steve C N

AU - Chu, Winnie C W

AU - Cheng, Jack C Y

AU - Castelein, RM

N1 - Funding Information: RCB (none); TPCS (none); DC (none); KLV (none); MvS (none); SCNH (none); WCWC (none); JCYC (none); RMC (grants from Alexandre Suerman UMC Utrecht PhD grant, grants from K2M research grant, grants from Medtronic research grant, outside the submitted work). Publisher Copyright: © 2016 Scoliosis Research Society

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Study Design Cross-sectional. Objectives To quantify the asymmetry of the vertebral bodies and pedicles in the true transverse plane in adolescent idiopathic scoliosis (AIS) and to compare this with normal anatomy. Summary of background data There is an ongoing debate about the existence and magnitude of the vertebral body and pedicle asymmetry in AIS and whether this is an expression of a primary growth disturbance, or secondary to asymmetrical loading. Methods Vertebral body asymmetry, defined as left-right overlap of the vertebral endplates (ie, 100%: perfect symmetry, 0%: complete asymmetry) was evaluated in the true transverse plane on CT scans of 77 AIS patients and 32 non-scoliotic controls. Additionally, the pedicle width, length, and angle and the length of the ideal screw trajectory were calculated. Results Scoliotic vertebrae were on average more asymmetric than controls (thoracic: AIS 96.0% vs. controls 96.4%; p =.005, lumbar: 95.8% vs. 97.2%; p

AB - Study Design Cross-sectional. Objectives To quantify the asymmetry of the vertebral bodies and pedicles in the true transverse plane in adolescent idiopathic scoliosis (AIS) and to compare this with normal anatomy. Summary of background data There is an ongoing debate about the existence and magnitude of the vertebral body and pedicle asymmetry in AIS and whether this is an expression of a primary growth disturbance, or secondary to asymmetrical loading. Methods Vertebral body asymmetry, defined as left-right overlap of the vertebral endplates (ie, 100%: perfect symmetry, 0%: complete asymmetry) was evaluated in the true transverse plane on CT scans of 77 AIS patients and 32 non-scoliotic controls. Additionally, the pedicle width, length, and angle and the length of the ideal screw trajectory were calculated. Results Scoliotic vertebrae were on average more asymmetric than controls (thoracic: AIS 96.0% vs. controls 96.4%; p =.005, lumbar: 95.8% vs. 97.2%; p

KW - Adolescent idiopathic scoliosis

KW - Axial rotation

KW - CT scan

KW - Pedicle asymmetry

KW - Transverse plane morphology

KW - Vertebral body asymmetry

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Asymmetry of the Vertebral Body and Pedicles in the True Transverse Plane in Adolescent Idiopathic Scoliosis: A CT-Based Study

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