scholarly journals Lumbar gravity line

2020 ◽  
Author(s):  
Yuranga Weerakkody
Keyword(s):  
Gravity Line

scholarly journals Equilibrium of the human body and the gravity line: the basics

2011 ◽  
Vol 20 (S5) ◽  
pp. 558-563 ◽  
Author(s):  
J. C. Le Huec ◽  
R. Saddiki ◽  
J. Franke ◽  
J. Rigal ◽  
S. Aunoble
Keyword(s):  
Human Body ◽  
Gravity Line

scholarly journals Radiographic Marking of Patient’s Gravity Line on X-Ray Images

2008 ◽  
Vol 2 (2) ◽  
Author(s):  
Chunhui Wu ◽  
Amir A. Mehbod ◽  
Ensor Transfeldt
Keyword(s):  
Sagittal Plane ◽  
Measurement Techniques ◽  
Force Plate ◽  
Outcome Evaluation ◽  
Radiology Department ◽  
Line Position ◽  
Motion Controller ◽  
Spinal Balance ◽  
X Ray ◽  
Gravity Line

Objective: To develop a clinically feasible apparatus for measuring and marking patient’s gravity line position on spinal x-ray images. Background: Spinal balance of patients with deformity or instability is an important clinical parameter for patient diagnosis, surgery planning and treatment outcome evaluation. Traditional assessment of spinal balance is performed on full spine x-ray images using C7 plumb line relative to central sacral line in the coronal plane or posterior superior corner of S1 in the sagittal plane. Researchers have developed measurement techniques using a force plate synchronized with x-ray equipment and offline x-ray image processing. The complexity of these techniques limits their clinical applications. In this study, we present a new system to mark gravity line directly on an x-ray image. Methods: The system consists of a force plate, a signal conditioner and processor, a motion controller and a motor assembly that moves a radio-opaque marker. The processor calculates the location of gravity line and marker position, and transmits motion commands to the motion controller, which drives a motor assembly and moves the marker to appropriate positions. The acquired x-ray image has a mark indicating the instantaneous gravity line position. Evaluation: A prototype was installed in the radiology department. More than 200 patients were instructed to stand on the force plate. Exposure was performed as in routine x-ray imaging. The system does not affect routine x-ray workflow and provides valuable information for spine surgeons.

Characterization of Sagittal Spine Alignment With Reference to the Gravity Line and Vertebral Slopes

Spine ◽  
2020 ◽  
Vol 45 (9) ◽  
pp. E481-E488
Author(s):  
Hwee Weng Dennis Hey ◽  
Kimberly-Anne Tan ◽  
Vishaal Nanik Thadani ◽  
Gabriel Ka-Po Liu ◽  
Hee-Kit Wong
Keyword(s):  
Gravity Line

scholarly journals Standing sagittal alignment of the whole axial skeleton with reference to the gravity line in humans

2017 ◽  
Vol 230 (5) ◽  
pp. 619-630 ◽  
Author(s):  
Kazuhiro Hasegawa ◽  
Masashi Okamoto ◽  
Shun Hatsushikano ◽  
Haruka Shimoda ◽  
Masatoshi Ono ◽  
...  
Keyword(s):  
Sagittal Alignment ◽  
Axial Skeleton ◽  
Gravity Line

Gravity Line Analysis in Adult Volunteers

Spine ◽  
2006 ◽  
Vol 31 (25) ◽  
pp. E959-E967 ◽  
Author(s):  
Frank Schwab ◽  
Virginie Lafage ◽  
Reid Boyce ◽  
Wafa Skalli ◽  
Jean-Pierre Farcy
Keyword(s):  
Gravity Line ◽  
Adult Volunteers ◽  
Line Analysis

scholarly journals Coronal trunk imbalance in idiopathic scoliosis: Does gravity line localisation confirm the physical findings?

2018 ◽  
Vol 104 (5) ◽  
pp. 617-622 ◽  
Author(s):  
Thibault Hernandez ◽  
Thomas Thenard ◽  
Claudio Vergari ◽  
Leopold Robichon ◽  
Wafa Skalli ◽  
...  
Keyword(s):  
Idiopathic Scoliosis ◽  
Gravity Line ◽  
Physical Findings ◽  
Trunk Imbalance
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