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Cervical axial rotation

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https://www.readbyqxmd.com/read/28723759/determining-the-relationship-of-kinesiophobia-with-respiratory-functions-and-functional-capacity-in-ankylosing-spondylitis
#1
Göktuğ Er, Ender AngIn
Ankylosing spondylitis (AS) is a common inflammatory rheumatic disease that affects the axial skeleton, causes inflammatory lower back pain, and structural and functional disorders, which affect quality of life negatively.The purpose of this study is to investigate the effects of kinesiophobia in AS on pulmonary function tests (PFTs) and functional performance.Thirty-one individuals with AS (n = 19 male, n = 12 female) who were suitable on the basis of the Modified New York (MNY) criteria were included in the study...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28715298/assessment-of-in%C3%A2-vivo-3d-kinematics-of-cervical-spine-manipulation-influence-of-practitioner-experience-and-occurrence-of-cavitation-noise
#2
Bernard Van Geyt, Pierre-Michel Dugailly, Paul Klein, Yves Lepers, Benoît Beyer, Véronique Feipel
BACKGROUND: Investigations on 3D kinematics during spinal manipulation are widely reported for assessing motion data, task reliability and clinical effects. However the link between cavitation occurrence and specific kinematics remains questionable. OBJECTIVES: This paper investigates the 3D head-trunk kinematics during high velocity low amplitude (HVLA) manipulation for different practitioners with respect to the occurrence of cavitation. METHODS: Head-trunk 3D motions were sampled during HVLA manipulation in twenty asymptomatic volunteers manipulated by four practitioners with different seniority (years of experience)...
April 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28713050/the-biomechanical-impact-of-the-facet-tropism-on-the-intervertebral-disc-and-facet-joints-in-the-cervical-spine
#3
Xin Rong, Beiyu Wang, Chen Ding, Yuxiao Deng, Hua Chen, Yang Meng, Weijie Yan, Hao Liu
BACKGROUND CONTEXT: The facet tropism is defined as the angular difference between the left and right facet orientation. The facet tropism was suggested to be associated with the disc degeneration and facet degeneration in the lumbar spine. However, little is known about the relationship between the facet tropism and pathological changes in the cervical spine and the mechanism behind. PURPOSE: This study was conducted to investigate the biomechanical impact of the facet tropism on the intervertebral disc and facet joints...
July 13, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28710045/management-of-pediatric-atlantoaxial-rotatory-subluxation-with-a-simple-hand-made-cervical-traction-device-doing-more-with-less
#4
Mohammad Sadegh Masoudi, Nima Derakhshan, Fariborz Ghaffarpasand, Tayebeh Sadeghpoor
Atlanto-axial (C1- C2) joint is accountable for up to two third of total axial craniocervical rotation. Its major role in pivotal rotation of cervical spine makes it more vulnerable to a certain type of injury known as atlanto-axial rotatory subluxation (AARS). Management of AARS is based on the Fielding classification which includes closed reduction and immobilization and cervical fusion in unstable cases. There are several cervical traction devices including the Gardner-Wells tongs and halter traction device...
July 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28678026/transoral-closed-reduction-of-fixed-atlanto-axial-rotatory-subluxation-aars-in-childhood-and-adolescence
#5
Dezsoe Jeszenszky, Tamas Fekete, Frank Kleinstück, Daniel Haschtmann, Markus Loibl
Atlanto-axial rotatory-subluxation (AARS) is the most common pediatric cervical spine injury. Patients usually present with contralateral rotation and inclination of the upper cervical spine after minor trauma, or associated with an infection of the upper respiratory tract. According to the authors, initial management of patients with acute and chronic AARS type I-II should comprise closed reduction and immobilization with a cervical collar or a Halo-Body-Jacket. Surgical options of open reduction or C1/2 fusion should be restricted to irreducible or recurrent subluxations...
July 3, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28673824/incorporating-ligament-laxity-in-a-finite-element-model-for-the-upper-cervical-spine
#6
Timothy L Lasswell, Duane S Cronin, John B Medley, Parham Rasoulinejad
BACKGROUND CONTEXT: Predicting physiological range of motion (ROM) using a finite element (FE) model of the upper cervical spine requires the incorporation of ligament laxity. The effect of ligament laxity can only be observed on a macro level of joint motion and is lost once ligaments have been dissected and preconditioned for experimental testing. As a result, although ligament laxity values are recognized to exist, specific values are not directly available in the literature for use in FE models...
June 30, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28606250/-three-dimensional-finite-element-model-of-a-modified-posterior-cervical-single-open-door-laminoplasty
#7
Q Wang, Y Yang, Q Fei, D Li, J J Li, H Meng, N Su, Z H Fan, B Q Wang
Objective: To build a three-dimensional finite element models of a modified posterior cervical single open-door laminoplasty with short-segmental lateral mass screws fusion. Methods: The C(2)-C(7) segmental data were obtained from computed tomography (CT) scans of a male patient with cervical spondylotic myelopathy and spinal stenosis.Three-dimensional finite element models of a modified cervical single open-door laminoplasty (before and after surgery) were constructed by the combination of software package MIMICS, Geomagic and ABAQUS...
June 6, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28591075/comparison-of-the-vacuum-mattress-versus-the-spine-board-alone-for-immobilization-of-the-cervical-spine-injured-patient-a-biomechanical-cadaveric-study
#8
Mark L Prasarn, Per Kristian Hyldmo, Laura A Zdziarski, Evan Loewy, Dewayne Dubose, MaryBeth Horodyski, Glenn R Rechtine
STUDY DESIGN: Biomechanical cadaveric study. SUMMARY OF BACKGROUND DATA: Trauma patients in the United States are immobilized on a rigid spine board, whereas in many other places vacuum mattresses are used with the proposed advantages of improved comfort and better immobilization of the spine. OBJECTIVE: We sought to determine the amount of motion generated in an unstable cervical spine fracture with use of the vacuum mattress versus the spine board alone...
June 6, 2017: Spine
https://www.readbyqxmd.com/read/28582418/an-in-vivo-comparison-study-in-goats-for-a-novel-motion-preserving-cervical-joint-system
#9
Jie Qin, Chenguang Zhao, Dong Wang, Bo Zhao, Jun Dong, Haopeng Li, Rongxia Sang, Shuang Wang, Jiao Fu, Rangrang Kong, Xijing He
Cervical degenerative disease is one of the most common spinal disorders worldwide, especially in older people. Anterior cervical corpectomy and fusion (ACCF) is a useful method for the surgical treatment of multi-level cervical degenerative disease. Anterior cervical disc replacement (ACDR) is considered as an alternative surgical method. However, both methods have drawbacks, particularly the neck motion decrease observed after arthrodesis, and arthroplasty should only be performed on patients presenting with cervical disc disease but without any vertebral body disease...
2017: PloS One
https://www.readbyqxmd.com/read/28501956/an-in-vitro-evaluation-of-sagittal-alignment-in-the-cervical-spine-after-insertion-of-supraphysiologic-lordotic-implants
#10
Donald J Blaskiewicz, Jeffrey E Harris, Patrick P Han, Alexander W Turner, Gregory M Mundis
PURPOSE: Cervical spine malalignment can develop as a consequence of degenerative disc disease or following spinal surgery. When normal sagittal alignment of the spine is disrupted, further degeneration may occur adjacent to the deformity. The purpose of this study was to investigate changes in lordosis and sagittal alignment in the cervical spine after insertion of supraphysiologic lordotic implants. METHODS: Eight cadaveric cervical spines (Occiput-T1) were tested...
May 13, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28418508/lower-cervical-spine-motion-segment-computational-model-validation-kinematic-and-kinetic-response-for-quasi-static-and-dynamic-loading
#11
Jeffrey B Barker, Duane S Cronin, Roger W Nightingale
Advanced computational human body models (HBM) enabling enhanced safety require verification and validation at different levels or scales. Specifically, the motion segments, which are the building blocks of a detailed neck model, must be validated with representative experimental data to have confidence in segment and, ultimately, full neck model response. In this study, we introduce detailed finite element motion segment models and assess the models for quasi-static and dynamic loading scenarios. Finite element segment models at all levels in the lower human cervical spine were developed from scans of a 26-yr old male subject...
June 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28378073/kinematics-of-cervical-segments-c5-c6-in-axial-rotation-before-and-after-total-disc-arthroplasty
#12
Martin Michael Wachowski, Jan Weiland, Markus Wagner, Riccardo Gezzi, Dietmar Kubein-Meesenburg, Hans Nägerl
PURPOSE: The kinematical properties of C5/C6 segments in axial rotation are evaluated before and after total disc arthroplasty (TDA) with PRESTIGE(®)-and BRYAN(®) Cervical Disc (Medtronic) under flexion/extension as parameters and compared with those of C3/C4. METHODS: Eight human segments were stimulated by triangularly varying, axially directed torque (T z(t)) under compressing static axial preloads. Using a 6D-measuring device with high resolution, the response of segmental motion was characterized by the instantaneous helical axis (IHA)...
April 4, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28370000/radiographic-and-computed-tomographic-appearance-of-tracheal-collapse-with-axial-rotation-in-four-dogs
#13
H G Heng, C K Lim, B Gutierrez-Crespo, L F Guptill
Tracheal collapse with axial rotation was diagnosed in four dogs. Radiographs showed increased tracheal dorsoventral height at the caudal cervical and thoracic inlet with and apparent intraluminal soft tissue opacity, mimicking an intraluminal tracheal foreign body. Computed tomography confirmed dorsoventral tracheal collapse with axial rotation in all dogs. Short-term outcome with medical treatment of all dogs was excellent.
April 3, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28343254/dynamic-measurements-of-cervical-neural-foramina-during-neck-movements-in-asymptomatic-young-volunteers
#14
Victor Chang, Azam Basheer, Timothy Baumer, Daniel Oravec, Colin P McDonald, Michael J Bey, Stephen Bartol, Yener N Yeni
PURPOSE: Neural foraminal dimensions are considered important in nerve root compression and development of cervical radiculopathy, but baseline data regarding their range during normal motion are not available. An in vivo study of cervical foraminal motion was conducted to characterize normal 3D dynamic foraminal dimensions during physiological neck motion and compare between different tasks and intervertebral segments. METHODS: Biplane X-ray imaging and computed tomography-based markerless tracking were used to measure foraminal height (FH) and width (FW) from five asymptomatic subjects during neck axial rotation and extension...
March 25, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28340590/comparison-of-angle-shape-and-position-of-articular-processes-in-dobermans-and-great-danes-with-and-without-cervical-spondylomyelopathy
#15
Marília de Albuquerque Bonelli, Ronaldo Casimiro da Costa, Paula Martin-Vaquero, Carolina Gonçalves Dias Lima
BACKGROUND: Cervical spondylomyelopathy (CSM), also known as wobbler syndrome, affects mainly large and giant-breed dogs, causing compression of the cervical spinal cord and/or nerve roots. Structural and dynamic components seem to play a role in the development of CSM; however, pathogenesis is not yet fully understood. Physiologic and pathologic movements of the cervical spine depend on the morphology and morphometry of articular processes, as well as on intervertebral discs and vertebral column ligaments...
March 24, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28340364/cervical-facet-force-analysis-after-disc-replacement-versus-fusion
#16
Vikas V Patel, Zachary R Wuthrich, Kirk C McGilvray, Matthew C Lafleur, Emily M Lindley, Derrick Sun, Christian M Puttlitz
BACKGROUND: Cervical total disc replacement was developed to preserve motion and reduce adjacent-level degeneration relative to fusion, yet concerns remain that total disc replacement will lead to altered facet joint loading and long-term facet joint arthrosis. This study is intended to evaluate changes in facet contact force, pressure and surface area at the treated and superior adjacent levels before and after discectomy, disc replacement, and fusion. METHODS: Ten fresh-frozen human cadaveric cervical spines were potted from C2 to C7 with pressure sensors placed into the facet joints of C3-C4 and C4-C5 via slits in the facet capsules...
May 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28324213/-split-and-splayed-c3-traumatic-lateral-c2-3-dislocation-without-neurological-deficits-unique-case-and-its-management
#17
Apinderpreeet Singh, Pravin Salunke, Rajeev P Kamble
BACKGROUND: Traumatic C2-3 dislocation has been often described in the antero-posterior plane but is extremely rare in the lateral plane. Such dislocations have been described in thoraco-lumbar and C1-2. The need to study the imaging in multiple planes has been highlighted to plan proper realignment. METHODS: A young male presented with neck pain alone following a train accident. The imaging showed a fracture of C3 splaying it. The C2-3 showed lateral dislocation in the lateral plane with locked C2-3 facets on one side and C3-4 facets on the other...
May 2017: European Spine Journal
https://www.readbyqxmd.com/read/28157621/analysis-of-the-upper-cervical-spine-stiffness-during-axial-rotation-a-comparative-study-among-patients-with-tension-type-headache-or-migraine-and-asymptomatic-subjects
#18
P-M Dugailly, A Decuyper, W Salem, A De Boe, G V Espí-López, Y Lepers
BACKGROUND: Many studies reported the implication of the cervical musculoskeletal system in patients with tension type headache and migraine. The objective of this study is to investigate the upper cervical spine stiffness features in axial rotation among headache patients in comparison with a healthy population. METHODS: 48 subjects including 30 migraine patients with/without aura and 18 patients with tension-type headache, aged between 18 and 60years (mean 36, SD 11years) have been evaluated...
January 27, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28146029/kinematics-of-the-cervical-spine-following-unilateral-facet-fracture-an-in-vitro-cadaver-study
#19
Paolo Caravaggi, Linda Chen, Linda Uko, Andres Zorrilla, Spencer Hauser, Michael J Vives
STUDY DESIGN: Biomechanical study utilizing human cadaveric cervical spines. OBJECTIVE: To quantitatively assess the effects on intervertebral motion of isolated unilateral cervical facet fracture, and after disruption of the intervertebral disc at the same level. SUMMARY OF BACKGROUND DATA: Clinical evidence has indirectly suggested that cervical facet fractures involving 40% of the height of the lateral mass can cause instability of the involved segment...
January 31, 2017: Spine
https://www.readbyqxmd.com/read/28144582/reliability-and-concurrent-validity-of-postural-asymmetry-measurement-in-adolescent-idiopathic-scoliosis
#20
Ashleigh Prowse, Berit Aslaksen, Marie Kierkegaard, James Furness, Paul Gerdhem, Allan Abbott
AIM: To investigate the reliability and concurrent validity of the Baseline(®) Body Level/Scoliosis meter for adolescent idiopathic scoliosis postural assessment in three anatomical planes. METHODS: This is an observational reliability and concurrent validity study of adolescent referrals to the Orthopaedic department for scoliosis screening at Karolinska University Hospital, Stockholm, Sweden between March-May 2012. A total of 31 adolescents with idiopathic scoliosis (13...
January 18, 2017: World Journal of Orthopedics
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