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Cervical axial rotation

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https://www.readbyqxmd.com/read/29669689/3-dimensional-cervical-movement-characteristics-and-the-influence-of-thoracic-treatment-on-a-subgroup-of-acute-neck-pain-patients
#1
Nikolas L Krott, Gunnar M Bloyinski, Erik Cattrysse
OBJECTIVE: The purpose of this study was to investigate the influence of thoracic high-velocity low-amplitude thrust (HVLAT) manipulation on quantitative and qualitative 3-dimensional cervical spine kinematic patterns in a subgroup of patients with acute neck pain. METHODS: Thirty patients with acute neck pain, aged 20 to 59, received a thoracic HVLAT manipulation. Three-dimensional kinematics of the cervical spine were registered pretreatment and posttreatment using an electromagnetic tracking system...
April 15, 2018: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/29627641/occiput-axis-crossing-translaminar-screw-fixation-technique-using-offset-connectors-an-in-vitro-biomechanical-study
#2
Jiyong Gu, Weiwei Lei, Zong Xin, Yi Wu, Lin Peng, Zhibin Li, Zize Feng, Minchan Zhao, Songtao Qi, Yuntao Lu
OBJECTIVE: Fixation with the axis vertebra (C2) using pedicle screws is commonly used to treat an unstable occipitocervical junction; however, it is accompanied by a risk of vertebral artery injury. The occiput-C2 (OC2) crossing translaminar screw fixation technique may avoid this risk, but rod implantation is difficult. Offset connectors can help facilitate this construct. This study aimed to evaluate the stability of a technique for OC2 crossing translaminar screw fixation using offset connectors (C2LAM + OF) in comparison with other methods...
April 3, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29574342/three-dimensional-kinematics-of-the-cervical-spine-using-an-electromagnetic-tracking-device-differences-between-healthy-subjects-and-subjects-with-non-specific-neck-pain-and-the-effect-of-age
#3
G P G Lemmers, M W M Heijmans, A Scafoglieri, R Buyl, J B Staal, M A Schmitt, E Cattrysse
BACKGROUND: A cross-sectional observational study of three-dimensional cervical kinematics in 35 non-specific neck pain patients and 100 asymptomatic controls. To compare qualitative and quantitative aspects of cervical kinematics between healthy subjects and subjects with non-specific neck pain and to determine the effect of age on cervical kinematics in healthy subjects. METHODS: Three-dimensional kinematics of active lateral bending and flexion-extension of 35 patients and 100 controls were registered by means of an electromagnetic tracking system...
March 17, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29533041/-biomechanical-study-of-the-stability-of-subaxial-cervical-anterior-transpedicular-screw-fixation-for-three-column-injury
#4
Hai-Hao Wu, Tao Tang, Qing-Jiang Pang, Xin-Hua Yuan, Chun-Guang Zhou
OBJECTIVE: To compare the stability of subaxial cervical anterior transpedicular screw(ATPS) fixation and three traditional fixations for three-column injury. METHODS: Six specimens of cervical spine were prepared. After measurememt of the range of motion(ROM) in intact state, the specimens were made into three-column injury models. The models were reconstructed with an anterior cervical cage, and stabilized by ATPS, anterior plate(AP), anterior plate + lateral mass screw(AP+LMS) and posterior transpedicular screw(PTPS)...
January 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29455101/does-pedicle-screw-fixation-of-the-subaxial-cervical-spine-provide-adequate-stabilization-in-a-multilevel-vertebral-body-fracture-model-an-in-vitro-biomechanical-study
#5
John Duff, Mir M Hussain, Noelle Klocke, Jonathan A Harris, Soumya S Yandamuri, Lukas Bobinski, Roy T Daniel, Brandon S Bucklen
BACKGROUND: Cervical vertebral body fractures generally are treated through an anterior-posterior approach. Cervical pedicle screws offer an alternative to circumferential fixation. This biomechanical study quantifies whether cervical pedicle screws alone can restore the stability of a three-column vertebral body fracture, making standard 360° reconstruction unnecessary. METHODS: Range of motion (2.0 Nm) in flexion-extension, lateral bending, and axial rotation was tested on 10 cadaveric specimens (five/group) at C2-T1 with a spine kinematics simulator...
March 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29454150/assessment-of-cervical-stiffness-in-axial-rotation-among-chronic-neck-pain-patients-a-trial-in-the-framework-of-a-non-manipulative-osteopathic-management
#6
P-M Dugailly, A Coucke, W Salem, V Feipel
BACKGROUND: Cervical stiffness is a clinical feature commonly appraised during the functional examination of cervical spine. Measurements of cervical stiffness in axial rotation have not been reported for patients with neck pain. The purpose of this study was to investigate cervical spine stiffness in axial rotation among neck pain patients and asymptomatic subjects, and to analyze the impact of osteopathic management. METHODS: Thirty-five individuals (17 patients) were enrolled...
February 12, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29451436/novel-posterior-artificial-atlanto-odontoid-joint-for-atlantoaxial-instability-a-biomechanical-study
#7
Kai Shen, Zhongliang Deng, Junsong Yang, Chao Liu, Ranxi Zhang
OBJECTIVE Atlantoaxial instability is usually corrected by anterior and/or posterior C1-2 fusion. However, fusion can lead to considerable loss of movement at the C1-2 level, which can adversely impact a patient's quality of life. In this study, the authors investigated the stability and function of a novel posterior artificial atlanto-odontoid joint (NPAAJ) by using cadaveric cervical spines. METHODS The Oc-C7 regions from 10 cadaveric spines were used for anteroposterior (AP) translation and range of motion (ROM) tests while intact and after destabilization, NPAAJ implantation, and double-rod fixation...
February 16, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29421491/development-of-a-finite-element-model-of-the-ligamentous-cervical-vertebral-column-of-a-great-dane
#8
Marília de Albuquerque Bonelli, Anoli Shah, Vijay Goel, Fabiano Séllos Costa, Ronaldo Casimiro da Costa
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. Finite element models have been used for years in human medicine to study the dynamic behavior of structures, but it has been mostly overlooked in veterinary studies. To our knowledge, no specific ligamentous spine models have been developed to investigate naturally occurring canine myelopathies and possible surgical treatments...
January 29, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29414758/morphometric-changes-of-the-cervical-intervertebral-foramen-a-comparative-analysis-of-pre-manipulative-positioning-and-physiological-axial-rotation
#9
Pierre-Michel Dugailly, Benoît Beyer, Walid Salem, Véronique Feipel
BACKGROUND: Cervical foraminal impingement has been described as a source of radicular pain. Clinical tests and head motions have been reported for affecting the intervertebral foramen (IVF) dimensions. Although manual approaches are proposed in the management of cervical radiculopathy, their influence on the foraminal dimensions remains unclear. OBJECTIVES: To investigate the influence of pre-manipulative positioning versus cervical axial rotation on the foraminal dimensions of the lower cervical spine...
January 26, 2018: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/29322984/a-device-for-three-dimensional-quantitative-assessment-and-alignment-of-c1-2-vertebrae-during-posterior-distraction-and-fusion-technique-for-atlantoaxial-dislocation-and-or-basilar-invagination
#10
P B Karthik, Jayesh Sardhara, Nachiketa Tiwari, Sanjay Behari
The most common type of congenital C1-2 dislocation is a combined type in which atlanto-axial dislocation (AAD) and basilar invagination (BI) are often associated with a rotational dislocation and coronal tilt. An optimal surgical treatment involves reduction of AAD and BI with simultaneous correction of the rotation and coronal tilt to achieve an optimal cervical canal decompression, sagittal and coronal realignment and bony fusion. The most acceptable technique to facilitate this correction is the C1-C2 distraction technique, which is accomplished by the manual joint manipulation...
January 2018: Neurology India
https://www.readbyqxmd.com/read/29310670/the-comparison-of-clinical-outcome-of-fresh-type-ii-odontoid-fracture-treatment-between-anterior-cannulated-screws-fixation-and-posterior-instrumentation-of-c1-2-without-fusion-a-retrospective-cohort-study
#11
Suomao Yuan, Bin Wei, Yonghao Tian, Jun Yan, Wanlong Xu, Lianlei Wang, Xinyu Liu
BACKGROUND: Recently, the excellent outcomes of temporary fixation of C1-2 without fusion in the treatment of odontoid fracture had been reported. It is still unclear if this technique could achieve the equivalent outcomes as the golden standard technique of anterior screw fixation. The objective of this study is to compare the clinical outcome of two treatments of fresh type II odontoid fracture: anterior cannulated screws fixation (ACSF) versus posterior instrumentation of C1-2 without fusion (PIWF)...
January 8, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29279998/modified-anterior-only-reduction-and-fixation-for-traumatic-cervical-facet-dislocation-ao-type-c-injuries
#12
Rishi M Kanna, Ajoy P Shetty, S Rajasekaran
PURPOSE: Surgical reduction of uni and bi-facetal dislocations of the cervical spine (AO type C injuries) can be performed by posterior, anterior or combined approaches. Ease of access, low infection rates and less risks of neurological worsening has popularized anterior approach. However, the reduction of locked cervical facets can be intricate through anterior approach. We analyzed the safety, efficacy and outcomes at a minimum 1 year, of a novel anterior reduction technique for consecutively treated cervical facet dislocations...
December 26, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29202506/effect-of-facetectomy-on-the-three-dimensional-biomechanical-properties-of-the-fourth-canine-cervical-functional-spinal-unit-a-cadaveric-study
#13
Nadja Bösch, Martin Hofstetter, Alexander Bürki, Beatriz Vidondo, Fenella Davies, Franck Forterre
Objective  To study the biomechanical effect of facetectomy in 10 large breed dogs (>24 kg body weight) on the fourth canine cervical functional spinal unit. Methods  Canine cervical spines were freed from all muscles. Spines were mounted on a six-degrees-of-freedom spine testing machine for three-dimensional motion analysis. Data were recorded with an optoelectronic motion analysis system. The range of motion was determined in all three primary motions as well as range of motion of coupled motions on the intact specimen, after unilateral and after bilateral facetectomy...
November 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29177553/a-novel-posterior-approach-preserving-three-muscles-inserted-at-c2-in-multilevel-cervical-posterior-decompression-and-fusion-using-c2-pedicle-screws
#14
Kazunari Takeuchi, Toru Yokoyama, Takuya Numasawa, Taito Itabashi, Yoshihito Yamasaki, Hitoshi Kudo
PURPOSE: To present a novel posterior approach in multilevel cervical posterior decompression and fusion (PDF) using C2 pedicle screws that preserves the rectus capitis posterior major, oblique capitis inferior, and semispinalis cervicis. METHODS: We analyzed 30 consecutive patients who underwent C2-T1 PDF using an approach that preserved these three muscles without resecting. We assessed O-C2 range of motion (ROM), cross-sectional area of the cervical posterior muscles, rotational ROM, visual analog scale (VAS) for axial pain, neck disability index (NDI), and limitations of activities of daily living (ADL) involving neck movements...
November 24, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29123446/ankylosing-spondylitis-and-balance
#15
REVIEW
Alper Uckun, Ilhan Sezer
Ankylosing spondylitis is a chronic inflammatory disease that mainly affects axial joints and the changes in the vertebrae cause typical kyphotic posture. In patients with ankylosing spondylitis, the postural changes, including cervical flexion, decreased lumbar lordosis, posterior rotation of pelvis, hip extension, knee flexion, and plantar flexion of ankle along with kyphosis, may occur in the upcoming terms of the disease and may negatively affect balance. Joint and eye involvements; muscular, vestibular and proprioceptional changes can also affect balance...
October 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/29115190/cervical-injury-related-to-mandibular-fractures-a-retrospective-study-of-315-cases
#16
Tommaso Cutilli, Secondo Scarsella, Desiderio Di Fabio, Antonio Oliva, Maria Adelaide Continenza, Giacomo Sollecchia, Stefano Necozione, Sara Bernardi
Objective To define the association between mandibular fractures and alterations of the cranio-atlo-axial joint (CAAJ). Methods 315 cases of displaced mandibular fractures were retrospectively evaluated by CT scan and cervical X-ray for associated alterations of the CAAJ. Statistical analysis employed the chi-square and Cohen's kappa coefficient. Results Single fractures amounted to 69.84% and multiple fractures to 30.16% of total fractures. CT scans showed a rotation of the atlas on the same side of single fractures and subluxation of the CAAJ...
November 8, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29074465/comparison-of-three-dimensional-helical-axes-of-the-cervical-spine-between-in-vitro-and-in-vivo-testing
#17
René Jonas, Robert Demmelmaier, Steffen P Hacker, Hans-Joachim Wilke
BACKGROUND CONTEXT: The range of motion is a well-accepted parameter for the assessment and evaluation of cervical motion. However, more qualitative data of the kinematics of the cervical spine are needed for the development and success of cervical disc arthroplasty. PURPOSE: The aim of this study was to provide basic information about helical axes of human cervical spine under in vitro conditions. Furthermore, it should clarify whether the three-dimensional helical axes of cervical motion gained from in vitro experiments are in agreement with those gained from in vivo experiments, and therefore to prove its reliability...
March 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29043798/jozilebomines-a-and-b-naphthylisoquinoline-dimers-from-the-congolese-liana-ancistrocladus-ileboensis-with-antiausterity-activities-against-the-panc-1-human-pancreatic-cancer-cell-line
#18
Jun Li, Raina Seupel, Torsten Bruhn, Doris Feineis, Marcel Kaiser, Reto Brun, Virima Mudogo, Suresh Awale, Gerhard Bringmann
Two new naphthylisoquinoline dimers, jozilebomines A (1a) and B (1b), were isolated from the roots of the Congolese plant Ancistrocladus ileboensis, along with the known dimer jozimine A2 (2). These compounds are Dioncophyllaceae-type metabolites, i.e., lacking oxygen functions at C-6 and with an R-configuration at C-3 in their tetrahydroisoquinoline moieties. The dimers 1a and 1b consist of two 7,1'-coupled naphthylisoquinoline monomers linked through an unprecedented 3',6″-coupling in the binaphthalene core and not, as in 2, via the C-3-positions of the two naphthalene units...
October 27, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29042769/bioabsorbable-self-retaining-pla-nano-sized-%C3%AE-tcp-cervical-spine-interbody-fusion-cage-in-goat-models-an-in-vivo-study
#19
Lu Cao, Qian Chen, Li-Bo Jiang, Xiao-Fan Yin, Chong Bian, Hui-Ren Wang, Yi-Qun Ma, Xiang-Qian Li, Xi-Lei Li, Jian Dong
STUDY DESIGN: This is an experimental animal study. OBJECTIVE: The objective of this study was to compare an anterior cervical discectomy and interbody fusion of a novel polylactide/nano-sized β-tricalcium phosphate (PLA/nβ-TCP) bioabsorbable self-retaining cervical fusion cage (BCFC) with an autologous bone graft and polyetheretherketone (PEEK) cages. BACKGROUND: Although PLA cervical cages have potential advantages compared with traditional materials, they are not currently routinely used in spine surgery because of undesirable effects such as the lack of osteoconductivity and osteolysis around the implant...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29019902/in-vitro-biomechanical-comparison-after-fixed-and-mobile-core-artificial-cervical-disc-replacement-versus-fusion
#20
COMPARATIVE STUDY
Jigang Lou, Yuanchao Li, Beiyu Wang, Yang Meng, Tingkui Wu, Hao Liu
In vitro biomechanical analysis after cervical disc replacement (CDR) with a novel artificial disc prosthesis (mobile core) was conducted and compared with the intact model, simulated fusion, and CDR with a fixed-core prosthesis. The purpose of this experimental study was to analyze the biomechanical changes after CDR with a novel prosthesis and the differences between fixed- and mobile-core prostheses.Six human cadaveric C2-C7 specimens were biomechanically tested sequentially in 4 different spinal models: intact specimens, simulated fusion, CDR with a fixed-core prosthesis (Discover, DePuy), and CDR with a mobile-core prosthesis (Pretic-I, Trauson)...
October 2017: Medicine (Baltimore)
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