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vestibular scoliosis

Jean-Philippe Pialasse, Pierre Mercier, Martin Descarreaux, Martin Simoneau
OBJECTIVE: It has been hypothesized that the impaired sensorimotor control observed in adolescents with idiopathic scoliosis (IS) may be related more to the onset of scoliosis than to the maturation of sensory systems or sensorimotor control mechanisms. The objective of this study was to assess sensorimotor control in adults diagnosed with IS in adolescence versus healthy controls. METHODS: The study included 20 young adults 20 to 24 years of age (10 healthy controls and 10 diagnosed with adolescent IS but not treated for it)...
September 2016: Journal of Manipulative and Physiological Therapeutics
Jean-Philippe Pialasse, Pierre Mercier, Martin Descarreaux, Martin Simoneau
PURPOSE: This study aims at verifying if impaired sensorimotor control observed in adolescents and young adults with scoliosis is also present in adult patients who underwent surgery to reduce their spine deformation. METHODS: The study included ten healthy adults and ten adults with idiopathic scoliosis who underwent surgery to reduce their spine deformation. Galvanic vestibular stimulation was delivered to assess sensorimotor control. Vertical forces under each foot and horizontal displacement of the upper body were measured before, during and after stimulation...
February 4, 2016: European Spine Journal
Jean-Philippe Pialasse, Martin Descarreaux, Pierre Mercier, Jean Blouin, Martin Simoneau
Adolescent idiopathic scoliosis is a multifactorial disorder including neurological factors. A dysfunction of the sensorimotor networks processing vestibular information could be related to spine deformation. This study investigates whether feed-forward vestibulomotor control or sensory reweighting mechanisms are impaired in adolescent scoliosis patients. Vestibular evoked postural responses were obtained using galvanic vestibular stimulation while participants stood with their eyes closed and head facing forward...
2015: PloS One
Jean-Philippe Pialasse, Martin Descarreaux, Pierre Mercier, Martin Simoneau
Idiopathic scoliosis is the most frequent spinal deformity in adolescence. While its aetiology remains unclear, impairments in balance control suggest a dysfunction of the sensorimotor control mechanisms. The objective of this paper is to evaluate the ability of patients with idiopathic scoliosis to reweigh sensory information. Using a neuromechanical model, the relative sensory weighting of vestibular and proprioceptive information was assessed. Sixteen healthy adolescents and respectively 20 and 16 adolescents with mild or severe scoliosis were recruited...
October 2015: Gait & Posture
Andriy Noshchenko, Lilian Hoffecker, Emily M Lindley, Evalina L Burger, Christopher Mj Cain, Vikas V Patel, Andrew P Bradford
AIM: To evaluate published data on the predictors of progressive adolescent idiopathic scoliosis (AIS) in order to evaluate their efficacy and level of evidence. METHODS: HASH(0x4f4c8e8) SELECTION CRITERIA: (1) study design: randomized controlled clinical trials, prospective cohort studies and case series, retrospective comparative and none comparative studies; (2) participants: adolescents with AIS aged from 10 to 20 years; and (3) treatment: observation, bracing, and other...
August 18, 2015: World Journal of Orthopedics
Martin Hitier, Michèle Hamon, Pierre Denise, Julien Lacoudre, Marie-Aude Thenint, Jean-François Mallet, Sylvain Moreau, Gaëlle Quarck
INTRODUCTION: Despite its high incidence and severe morbidity, the physiopathogenesis of adolescent idiopathic scoliosis (AIS) is still unknown. Here, we looked for early anomalies in AIS which are likely to be the cause of spinal deformity and could also be targeted by early treatments. We focused on the vestibular system, which is suspected of acting in AIS pathogenesis and which exhibits an end organ with size and shape fixed before birth. We hypothesize that, in adolescents with idiopathic scoliosis, vestibular morphological anomalies were already present at birth and could possibly have caused other abnormalities...
2015: PloS One
Jean-Francois Catanzariti, Marc-Alexandre Guyot, Caroline Massot, Hichem Khenioui, Olivier Agnani, Cécile Donzé
PURPOSE: Adolescent idiopathic scoliosis (AIS) is a three-dimensional deformity of the spine, with unknown origin. Some studies have noted impaired postural balance in AIS, in particular, difficulty to manage situations with sensory conflict. The motion sickness susceptibility can be secondary to a sensory conflict, for example, between visual and vestibular information. Our hypothesis is: patients with AIS have difficulty in managing situations with sensory conflict and therefore have increased motion sickness susceptibility...
February 2016: European Spine Journal
Chengfeng Wen, Defeng Wang, Lin Shi, Winnie C W Chu, Jack C Y Cheng, Lok Ming Lui
The analysis of the vestibular system (VS) is an important research topic in medical image analysis. VS is a sensory structure in the inner ear for the perception of spatial orientation. It is believed several diseases, such as the Adolescent Idiopathic Scoliosis (AIS), are due to the impairment of the VS function. The morphology of the VS is thus of great research significance. A major challenge is that the VS is a genus-3 surface. The high-genus topology of the VS poses great challenges to find accurate pointwise correspondences between the surfaces and whereby perform accurate shape analysis...
September 2015: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
Ammar H Hawasli, Timothy E Hullar, Ian G Dorward
PURPOSE: Despite its high prevalence, the etiology underlying idiopathic scoliosis remains unclear. Although initial scrutiny has focused on genetic, biochemical, biomechanical, nutritional and congenital causes, there is growing evidence that aberrations in the vestibular system may play a role in the etiology of scoliosis. In this article, we discuss putative mechanisms for adolescent idiopathic scoliosis and review the current evidence supporting a role for the vestibular system in adolescent idiopathic scoliosis...
February 2015: European Spine Journal
J-F Catanzariti, O Agnani, M-A Guyot, S Wlodyka-Demaille, H Khenioui, C Donze
UNLABELLED: Adolescent idiopathic scoliosis (AIS) is a tridimensional deformity of the spinal column. This frequent disease, which has no clearly identified pathogenic mechanism, can have serious consequences. It has been hypothesized that unilateral and isolated vestibular disorders could be the origin of AIS. The objective of this work is to verify this hypothesis and to establish a pathophysiological model. METHOD: We performed a Pubmed-NCBI search, for the period 1966-2013, crossing the keyword scoliosis with the following keywords: vestibular, labyrinthine, postural control...
August 2014: Annals of Physical and Rehabilitation Medicine
François M Lambert, David Malinvaud, Maxime Gratacap, Hans Straka, Pierre-Paul Vidal
Adolescent idiopathic scoliosis in humans is often associated with vestibulomotor deficits. Compatible with a vestibular origin, scoliotic deformations were provoked in adult Xenopus frogs by unilateral labyrinthectomy (UL) at larval stages. The aquatic ecophysiology and absence of body-weight-supporting limb proprioceptive signals in amphibian tadpoles as a potential sensory substitute after UL might be the cause for a persistent asymmetric descending vestibulospinal activity. Therefore, peripheral vestibular lesions in larval Xenopus were used to reveal the morphophysiological alterations at the cellular and network levels...
April 17, 2013: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
Lea Pollak, Natan Shlamkovic, Alla Minewicz, Yigal Mirovsky
BACKGROUND: To investigate whether otolith system, as a major contributor to muscles for postural control, might play a role in the pathogenesis of idiopathic scoliosis (IS). METHODS: Cervical vestibular-evoked myogenic potentials (VEMP) testing was applied to investigate the otolith function in patients with IS. Twenty-nine healthy patients (mean age 13.5±2.5 y, 4 males) were included. In all but 2 patients, the major curve deviation was to the right and the mean angle deviation was 49...
April 2013: Journal of Pediatric Orthopedics
Jean-Philippe Pialasse, Simon Laurendeau, Martin Descarreaux, Jean Blouin, Martin Simoneau
Results from several studies have suggested that brainstem dysfunction occurs more often in adolescent with idiopathic scoliosis compared to healthy individuals. The vestibular nuclei occupy a prominent position in the brainstem. Because the lateral vestibulospinal tract controls axial muscles, alteration in the brainstem during body growth (i.e., preadolescent and adolescent period) may translate in abnormal trunk activation and thus cause permanent spinal deformities. We conceive that vestibular dysfunction may be observed only in AIS patients with severe spine deviation...
March 2013: Medical Hypotheses
Alexis Lion, Thierry Haumont, Gérome C Gauchard, Sylvette R Wiener-Vacher, Pierre Lascombes, Philippe P Perrin
STUDY DESIGN: Cross-sectional study. OBJECTIVE: To determine whether adolescent idiopathic scoliosis (AIS) at onset is associated with oculomotor dysfunction and whether these oculomotor anomalies are correlated to the amplitude of the spine deformation. SUMMARY OF BACKGROUND DATA: AIS is related to abnormalities of postural control. To date, few studies have focused on visuo-oculomotor and vestibulo-ocular functions at early-stage AIS. METHODS: Fifty-three adolescent girls were diagnosed with AIS (mean age: 11...
February 1, 2013: Spine
Christine Assaiante, Sophie Mallau, Jean-Luc Jouve, Gérard Bollini, Marianne Vaugoyeau
INTRODUCTION: It has been reported that AIS rely much more on ankle proprioception to control the amplitude of the balance control commands as compared to age-matched healthy adolescents. Our hypothesis was that AIS do not neglect proprioceptive information to control posture probably because of their vestibular deficits. We investigated the proprioceptive contribution to postural control in AIS which expresses spinal deformity during a crucial transitional period of ontogenesis. METHODS: 10 adolescents with idiopathic scoliosis (AIS) with moderate spinal deformity (10° < Cobb Angle >35°) and 10 control adolescents (CA) had to maintain vertical stance while very slow oscillations in the frontal plane (below the detection threshold of the semicircular canal system) were applied to the support with the eyes open and closed...
2012: PloS One
Shi-Qing Xin, Ying He, Chi-Wing Fu, Defeng Wang, Shi Lin, Winnie C W Chu, Jack C Y Cheng, Xianfeng Gu, Lok Ming Lui
This paper proposes a novel algorithm to extract feature landmarks on the vestibular system (VS), for the analysis of Adolescent Idiopathic Scoliosis (AIS) disease. AIS is a 3-D spinal deformity commonly occurred in adolescent girls with unclear etiology. One popular hypothesis was suggested to be the structural changes in the VS that induce the disturbed balance perception, and further cause the spinal deformity. The morphometry of VS to study the geometric differences between the healthy and AIS groups is of utmost importance...
2011: Medical Image Computing and Computer-assisted Intervention: MICCAI ..
Defeng Wang, Lin Shi, Winnie C W Chu, R Geoffrey Burwell, Jack C Y Cheng, Anil T Ahuja
Adolescent idiopathic scoliosis (AIS) is a 3-D spinal deformity with uncertain etiology; abnormalities in brain development represent one of the possible explanatory concepts for its pathogenesis. The objective of this study is to investigate the brain maturation by thickness of cerebral cortex among female adolescents with and without idiopathic scoliosis. Fifty AIS patients with a typical right-thoracic curve pattern were compared with 40 age-matched healthy controls. Based on the T1-weighted magnetic resonance images, the thickness of cortical gray-matter was calculated using a well-validated surface measurement method...
January 16, 2012: NeuroImage
Simone L Ardern-Holmes, Kathryn N North
Neurofibromatosis type 1 (NF1) and type 2 (NF2) are genetically and medically distinct neurocutaneous disorders that are both associated with tumors affecting the central and peripheral nervous systems. NF1 has a frequency of 1 in 3,000, compared with 1 in 30,000 for NF2. Careful surveillance is important for both conditions, to allow early identification and treatment of complications. The most common and important problems in NF1 are cognitive impairment, optic pathway gliomas, plexiform neurofibromas, and orthopaedic issues...
December 2011: Current Treatment Options in Neurology
Ondřej Cakrt, Kryštof Slabý, Lucie Viktorinová, Pavel Kolář, Jaroslav Jeřábek
Idiopathic scoliosis (IS) is characterized by a three-dimensional deviation of the vertebral column and its etiopathogenesis is unknown. Various factors are associated with idiopathic scoliosis, among these a prominent role has been attributed to integration of vestibular information with graviception for perception of space. Subjective visual vertical (SVV) is a sensitive sign of verticality perception. The aim of this study was to determine if SVV in adolescents with IS is different from healthy controls...
2011: Journal of Vestibular Research: Equilibrium & Orientation
Thierry Haumont, Gérome C Gauchard, Pierre Lascombes, Philippe P Perrin
STUDY DESIGN: Cross-sectional study. OBJECTIVE: To evaluate whether the amplitude of spine deformation in adolescent idiopathic scoliosis (AIS) is an important factor for postural control at disease onset. SUMMARY OF BACKGROUND DATA: AIS is related to disorders of postural control with potential involvement of vestibular, proprioceptive, and visual input. So far no assessment of postural control has been done in an AIS population at the onset of spine deformation...
June 2011: Spine
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