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https://www.readbyqxmd.com/read/28524792/analysis-and-interrater-reliability-of-pb-c2-using-mri-and-ct-data-from-the-park-reeves-syringomyelia-research-consortium-on-behalf-of-the-pediatric-craniocervical-society
#1
Todd C Hankinson, Gerald F Tuite, Dagmara I Moscoso, Leslie C Robinson, James C Torner, David D Limbrick, Tae Sung Park, Richard C E Anderson
OBJECTIVE The distance to the ventral dura, perpendicular to the basion to C2 line (pB-C2), is commonly employed as a measure describing the anatomy of the craniovertebral junction. However, both the reliability among observers and the clinical utility of this measurement in the context of Chiari malformation Type I (CM-I) have been incompletely determined. METHODS Data were reviewed from the first 600 patients enrolled in the Park-Reeves Syringomyelia Research Consortium with CM-I and syringomyelia. Thirty-one cases were identified in which both CT and MRI studies were available for review...
May 19, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28511365/morphological-and-morphometric-analysis-of-hypoglossal-canal-in-north-indian-dry-skulls-and-it-s-significance-in-cranial-base-surgeries
#2
Shalini Kumar, Ranjana Verma, Arpita Mahajan Rai, Raj D Mehra
INTRODUCTION: Hypoglossal Canal (HC) is a paired bony passage which is situated above the Occipital Condyle (OC) and transmits hypoglossal nerve and blood vessels. Studies on the osteotic variations of HC has been a field of considerable interest to research workers especially because of its clinical, radiological and surgical significance. AIM: The aim of the present study was to analyze the morphological and morphometric features of HC and its topographical relationship with OC...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28480105/conservative-management-of-craniovertebral-junction-injuries-still-a-good-option
#3
Humam Tanki, Abrar A Wani, Altaf U Ramzan, Nayl K Malik, Sarbjit S Chhibber, Bashir A Dar, Sajad Arif, Zulfiqar Ali, M Masood Laherwal
BACKGROUND: Injuries to the craniovertebral junction (CVJ) are not uncommon, and are among the few skeletal injuries that carry a high mortality rate. Successful management of these injuries depends on familiarity with the normal anatomic relationships of this region, as well as prudent decision making regarding surgical versus conservative management alternatives. METHODS: The purpose of this study was to analyze the indications for conservative treatment of CVJ trauma and to analyze the outcomes...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28475021/individualized-3d-printed-model-assisted-posterior-screw-fixation-for-the-treatment-of-craniovertebral-junction-abnormality-a-retrospective-study
#4
Fangyou Gao, Qu Wang, Chuangxi Liu, Bing Xiong, Tao Luo
OBJECTIVE This study was undertaken to evaluate the feasibility and efficacy of individualized 3D printed model-assisted posterior internal fixation in treating craniovertebral junction (CVJ) abnormalities. METHODS Forty-four patients (19 males and 25 females; mean age 36.5 ± 9.2 years, range 11-62 years; symptom duration 1 month-15 years) with a CVJ abnormality who were admitted to the authors' institution between April 2010 and April 2015 were retrospectively studied. The individualized 3D printed model of the CVJ was produced based on the individual CT data by use of 3D printing technology...
May 5, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28457924/surgical-intervention-for-unstable-craniovertebral-junction-anomalies-with-a-narrow-c2-pedicle
#5
Rami Darwazeh, Qiang Liu, Lei Deng, Jiajie Xia, Mohammed A Elzain, Mazhar Darwazeh, Piyush Sharma, Bo Zhang, Yi Yan
OBJECTIVE: To investigate and report a novel surgical technique of screws insertion and posterior surgical reduction as well as explore its clinical results. METHODS: From September 2008 to September 2012, 41 cases of unstable craniovertebral junction anomalies with a narrow C2 pedicle were treated at our department. All patients underwent "posterior reduction and internal fixation of the occipital bone with superior or inferior articular process of C2 and lateral mass of C3 on the narrowed C2 pedicle side -for non-narrowed C2 pedicle side, the screw was only inserted into C2 pedicle without extending the fixation to C3 vertebrae- using a titanium screw-rod (plate) fixation system"...
April 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28453447/correlation-between-forward-head-posture-respiratory-functions-and-respiratory-accessory-muscles-in-young-adults
#6
Mi-Sun Kim, Yong-Jun Cha, Jong-Duk Choi
BACKGROUND: Forward head posture (FHP) causes changes in the strengths and rigidities of cervical muscles. OBJECTIVE: The aim of this study was to investigate correlations between FHP and respiratory functions and the muscle activities of respiratory accessory muscles in young adults in their 20s. METHODS: A volunteer sample of 33 healthy young adults participated in this study. Craniovertebral angle (CVA), cranial rotational angle (CRA), vital capacity (VC), forced vital capacity (FVC), forced expiratory volume at 1 second (FEV1), peak expiratory flow (PEF), maximal voluntary ventilation (MVV), and sternocleidomastoid (SCM) and upper trapezius activity ratios were measured...
April 14, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28399105/-treatment-of-syringomyelia-associated-with-chiari-1-malformation
#7
A A Zuev, G V Kostenko
Syringomyelia (SM) develops due to the disturbance of cerebrospinal fluid dynamics, spinal fixation or a spinal tumor. The disturbance of cerebrospinal fluid dynamics in the area of the foramen magnum leads to the progression of SM in Chiari 1 malformation (CM1). CM1 is the most prevalent pathology of craniovertebral junction associated with SM. The prevalence of CM1 varies from 3 to 8 per 100 000 population but SM is diagnosed in 65% of patients with CM1. Clinical symptoms of CM1 and SM include pain in the occipital area, gait disturbances due to sensitive ataxia, dissociated sensory disorders, dysphagia, paresis of the extremities...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28387614/reduction-of-atlantoaxial-dislocation-prevented-by-pathological-position-of-the-transverse-ligament-in-fixed-irreducible-os-odontoideum-operative-illustrations-and-radiographic-correlates-in-41-patients
#8
Brian J Dlouhy, Bruno A Policeni, Arnold H Menezes
OBJECTIVE Os odontoideum (OO) is a craniovertebral junction (CVJ) abnormality in which an ossicle (small bone) is cranial to a hypoplastic dens by a variable gap. This abnormality can result in instability, which may be reducible or irreducible. What leads to irreducibility in OO is unclear. Therefore, the authors sought to better understand the causes of irreducibility in OO. METHODS A retrospective review was conducted, which identified more than 200 patients who had undergone surgical treatment for OO between 1978 and 2015 at the University of Iowa Hospitals and Clinics...
April 7, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28368478/stabilization-of-tumor-associated-craniovertebral-junction-instability-indications-operative-variables-and-outcomes
#9
Scott L Zuckerman, Fabiana Kreines, Ann Powers, J Bryan Iorgulescu, James B Elder, Mark H Bilsky, Ilya Laufer
BACKGROUND: Whether primary or metastatic, tumors of the craniovertebral junction (CVJ) are rare and challenging. OBJECTIVE: To examine the surgical indications, operative variables, and outcomes in patients with tumors of the CVJ undergoing occipitocervical (OC) stabilization. METHODS: A single-institution, retrospective case series was performed from a prospectively maintained spine database. Patients with primary or metastatic tumors of the CVJ who underwent OC stabilization were identified...
March 28, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28361020/role-of-dynamic-computed-tomography-scans-in-patients-with-congenital-craniovertebral-junction-malformations
#10
Otávio Turolo da Silva, Enrico Ghizoni, Helder Tedeschi, Andrei Fernandes Joaquim
AIM: To evaluate the role of dynamic computed tomography (CT) scan imaging in diagnosing craniovertebral junction (CVJ) instability in patients with congenital CVJ malformations. METHODS: Patients with symptomatic congenital CVJ malformations who underwent posterior fossa decompression and had a preoperative dynamic CT scan in flexion and extended position were included in this study. Measurements of the following craniometrical parameters were taken in flexed and extended neck position: Atlanto-dental interval (ADI), distance of the odontoid tip to the Chamberlain's line, and the clivus-canal angle (CCA)...
March 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28344179/first-gross-anatomic-findings-of-an-os-odontoideum
#11
Juan P Sardi, Joe Iwanaga, Rod J Oskouian, R Shane Tubbs
BACKGROUND: Os odontoideum is an uncommon abnormality of the craniovertebral junction where the tip of the odontoid process lacks continuity with the body of C2. The clinical presentation is variable, but severe neurologic impairment can result. CASE DESCRIPTION: We report the gross and radiologic findings of a cadaver found to harbor an os odontoideum. CONCLUSIONS: To our knowledge, there are no cadaveric reports in the literature regarding an os odontoideum...
May 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28322453/radio-anatomical-analysis-of-the-pericranial-flap-money-box-approach-for-ventral-skull-base-reconstruction
#12
Alfonso Santamaría, Cristóbal Langdon, Mauricio López-Chacon, Arturo Cordero, Joaquim Enseñat, Ricardo Carrau, Manuel Bernal-Sprekelsen, Isam Alobid
OBJECTIVES/HYPOTHESIS: To evaluate the versatility of the pericranial flap (PCF) to reconstruct the ventral skull base, using the frontal sinus as a gate for its passage into the sinonasal corridor "money box approach." STUDY DESIGN: Anatomic-radiological study and case series. METHODS: Various approaches and their respective defects (cribriform, transtuberculum, clival, and craniovertebral junction) were completed in 10 injected specimens...
March 21, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28321382/understanding-the-course-of-vertebral-artery-at-craniovertebral-junction-in-occipital-assimilation-of-atlas-made-simplified-using-conventional-angiography
#13
Anita Jagetia, Tushit Mewda, Ishu Bishnoi, Manoj Bhutte, Hukum Singh, A K Srivastava, Daljit Singh
Introduction Preoperative assessment of vertebral artery (VA) is important to avoid its injury during surgery at craniovertebral junction (CVJ). The main concern is the course of third segment of VA (V3) while performing instrumentation at CVJ, that is, segment of VA from its course through transverse foramen of C2 to its course along the posterior arch of C1. This segment of VA includes its passage through C1 transverse foramen as well. This observational study was done to analyze the course, curvature, and termination of VA in patients with occipital assimilation of atlas at CVJ, a complex congenital anomaly, and compared with the normal course for better understanding especially by young neurosurgeons and spine surgeons...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28290397/endoscopic-technique-for-single-stage-anterior-decompression-and-anterior-fusion-by-transcervical-approach-in-atlantoaxial-dislocation
#14
Yad Ram Yadav, Shailendra Ratre, Vijay Parhihar, Amitesh Dubey, Neil M Dubey
Although posterior approaches are being used frequently in most atlantoaxial dislocations (AAD), anterior decompression is also required in some patients in whom the C1-2 dislocation is not properly reduced by the posterior approach. Transnasal and transoral approaches need an additional posterior approach to perform atlantoaxial fusion. They also have an added risk of infection. The endoscopic transcervical approach can be used for single-stage cervical decompression and stabilization that includes an odontoidectomy and anterior fusion...
March 2017: Neurology India
https://www.readbyqxmd.com/read/28250633/top-50-most-cited-articles-on-craniovertebral-junction-surgery
#15
Nima Alan, Jonathan Andrew Cohen, James Zhou, Matthew Pease, Adam S Kanter, David O Okonkwo, David Kojo Hamilton
BACKGROUND: Craniovertebral junction is a complex anatomical location posing unique challenges to the surgical management of its pathologies. We aimed to identify the fifty most-cited articles that are dedicated to this field. METHODS: A keyword search using the Thomson Reuters Web of Knowledge was conducted to identify articles relevant to the field of craniovertebral junction surgery. The articles were reviewed based on title, abstract, and methods, if necessary, and then ranked based on the total number of citations to identify the fifty most-cited articles...
January 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28250629/the-three-dimensional-difference-craniovertebral-junction-unveiled
#16
EDITORIAL
Abhidha Shah
No abstract text is available yet for this article.
January 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28217386/true-oblique-axis-fracture-associated-with-congenital-anomalies-of-the-upper-cervical-spine-case-report-of-an-unusual-fracture-pattern
#17
Luis A Robles
BACKGROUND: Acute traumatic axis fractures are common cervical spine injuries often caused by road accidents or falls. They are usually classified into three different types, namely, odontoid fractures, Hangman's fractures, and miscellaneous fractures. Congenital malformations of the craniovertebral junction (CVJ), although typically asymptomatic, may result in neural compression or instability, especially following trauma. Here, the authors present an unusual oblique axis fracture occurring in conjunction with several malformations of the upper cervical spine...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28214971/complete-occipitalization-of-the-atlas-with-bilateral-external-auditory-canal-atresia
#18
Janez Dolenšek, Erika Cvetko, Žiga Snoj, Marija Meznaric
Fusion of the atlas with the occipital bone is a rare congenital dysplasia known as occipitalization of the atlas, occipitocervical synostosis, assimilation of the atlas, or atlanto-occipital fusion. It is a component of the paraxial mesodermal maldevelopment and commonly associated with other dysplasias of the craniovertebral junction. External auditory canal atresia or external aural atresia is a rare congenital absence of the external auditory canal. It occurs as the consequence of the maldevelopment of the first pharyngeal cleft due to defects of cranial neural crest cells migration and/or differentiation...
February 18, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28192262/intraoperative-ultrasonography-for-definition-of-less-invasive-surgical-technique-in-patients-with-chiari-type-i-malformation
#19
Roger Schmidt Brock, Mario Augusto Taricco, Matheus Fernandes de Oliveira, Marcelo de Lima Oliveira, Manoel Jacobsen Teixeira, Edson Bor-Seng-Shu
INTRODUCTION: Chiari malformation type I (CM) is the main congenital malformation disease of the craniovertebral junction. The ideal surgical treatment is still controversial. Invasive procedures inside the cerebrospinal fluid (CSF) space and associated with dural repair are considered the gold standard; however, less invasive surgery with isolated bone decompression without dural opening may be possible in selected patients. Our study evaluates the efficacy of intraoperative CSF flow measurement with ultrasonography (USG) as a determining parameter in the selection of these patients...
May 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28186471/tumoral-calcinosis-of-the-craniovertebral-junction-as-a-cause-of-dysphagia-with-treatment-by-transoral-decompression-case-report
#20
Michael A Mooney, Mark E Oppenlander, U Kumar Kakarla, Nicholas Theodore
Tumoral calcinosis is characterized by tumor-like deposition of calcium in periarticular soft tissue. Spinal involvement is rare, and perioperative diagnosis of tumoral calcinosis can be difficult because lesions may be confused with bony neoplasms. Symptoms of tumoral calcinosis result from bony involvement and/or direct compression of surrounding anatomical structures, for which treatment with surgical decompression can be highly successful. The craniovertebral junction is rarely affected by tumoral calcinosis, and patients with this condition may present with distinct symptoms...
May 2017: Journal of Neurosurgery. Spine
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