Results 131 to 140 of about 1,888,621 (206)

Human-in-the-Loop Optimization of Active Back-Support Exoskeleton Assistance Via Lumbosacral Joint Torque Estimation

IEEE/RJS International Conference on Intelligent RObots and Systems, 2023
The assistive profile of an active back support exoskeleton is strongly dependent on the manual tuning of controller gains based on previous experience and trial-and-error.
Andreas Sochopoulos, Tommaso Poliero, Darwin G. Caldwell, J. Ortiz, C. Natali   +4 more
semanticscholar   +1 more source

A preliminary study in classification of the severity of spine deformation in adolescents with lumbar/thoracolumbar idiopathic scoliosis using machine learning algorithms based on lumbosacral joint efforts during gait

Computer Methods in Biomechanics and Biomedical Engineering, 2022
To assess the severity and progression of adolescents with idiopathic scoliosis (AIS), radiography with X-rays is usually used. The methods based on statistical observations have been developed from 3D reconstruction of the trunk or topography.
B. Samadi, M. Raison, P. Mahaudens, C. Detrembleur, S. Achiche   +4 more
semanticscholar   +1 more source

Biomechanics evaluation of sacroiliac joint pain after lumbosacral fusion: A finite element analysis

Journal of Orthopaedic Research, 2022
The sacroiliac joint (SIJ) constitutes the predominant pain source following lumbar or lumbosacral fusion. Although studies have investigated the biomechanical patterns of SIJ behaviors after lumbosacral fusion, the relationship between ligament strain ...
Zhidong Yao, Liuxun Li, Peng Zhang, Lei Yang, Xueling Bai, S. Peng, Y. Lai   +6 more
semanticscholar   +1 more source

Lumbosacral Joint Angles in Children

Journal of Pediatric Orthopaedics, 1991
We wished to determine values for the lumbosacral angles in children without spondylolisthesis. Eleven angles were measured on 112 consecutive standing lateral radiographs of children ranging in age from 3 to 18 years. Gender and scoliosis affected only sacral roll and the lumbosacral angle, respectively.
J G, Wright, D, Bell
openaire   +2 more sources

111In-Oxine-WBC SPECT/CT of Lumbosacral Facet Joint Septic Arthritis.

Clinical Nuclear Medicine, 2020
Spinal facet joint septic arthritis is a rare pathology associated with pyogenic organisms. It may present in older adults with back pain, fever, and positive bacterial blood cultures. However, clinical presentation may be equivocal, and diagnosis relies
E. Zamora, Ana Y. Valdivia, Arun Kumar, K. Chun   +3 more
semanticscholar   +1 more source

REDUCED LUMBOSACRAL JOINT SPACE

Journal of the American Medical Association, 1932
During the past two years it has been the routine procedure of my associates and myself to take anteroposterior and lateral x-ray pictures of the dorsal, lumbar and sacral spine, as well as an anteroposterior view of the pelvis, of all patients complaining of a painful back. The procedure was instituted because many conditions of the spine gave neither
openaire   +1 more source

Unilateral lumbosacral facet joint dislocation without associated fracture

Australasian Radiology, 2004
SummaryIn the lumbosacral spine, unilateral facet joint dislocation is an infrequent injury, which is often associated with fractures at the involved or other lumbar levels. The rare occurrence of unilateral lumbosacral facet joint dislocation without any associated fractures is presented with CT and MRI, and surgical correlation.
Ranald M, Stuart, Swithin J, Song
openaire   +2 more sources

Traumatic Posterior Fracture-dislocation of the Lumbosacral Joint

The Journal of Trauma: Injury, Infection, and Critical Care, 1980
An unusual case of traumatic posterior fracture-dislocation of the lumbosacral joint is presented. Spontaneous fusion occurred without attempted reduction. Osteomyelitis and paraplegia were associated with the injury.
J B, Griffin, G H, Sutherland
openaire   +2 more sources

Unilateral Lumbosacral Facet Joint Dislocation Associated

Journal of Orthopaedic Trauma, 1991
An 18-year-old woman involved in a motor vehicle accident sustained a vertical shear fracture of the sacrum accompanied by unilateral dislocation of the L5-S1 joint. Evaluation of the patient's injuries was defined by computed axial tomography. Through a posterior midline incision, open reductions of the dislocated L5-S1 joint and of the sacral ...
N A, Ebraheim, E R, Savolaine, P, Shapiro, T, Houston, W T, Jackson   +4 more
openaire   +2 more sources

Increasing pelvic tilt after lumbosacral fusion predicts higher frequency of posttreatment sacroiliac joint fusion.

Journal of Neurosurgery : Spine
OBJECTIVE Sacroiliac joint dysfunction is increasingly recognized as a source of low back pain. Sacroiliac joint dysfunction after lumbosacral fusion is a potential cause of persistent disability and may be difficult to predict.
Kevin T. Kim, Matthew Hentschel, Rong Zhao, Maureen Rakovec, Nathan Han, Chixiang Chen, T. Chryssikos, Charles Sansur   +7 more
semanticscholar   +1 more source