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https://www.readbyqxmd.com/read/28076601/retrospective-analysis-of-a-case-series-of-patients-with-traumatic-injuries-to-the-craniocervical-junction
#1
Luiz Adriano Esteves, Andrei Fernandes Joaquim, Helder Tedeschi
Objective: To evaluate the correlation between the treatment, the characteristics of the lesions and the clinical outcome of patients with traumatic injuries to the craniocervical junction. Methods: This was a retrospective study of patients treated conservatively or surgically between 2010 and 2013 with complete data sets. Results: We analyzed 37 patients, 73% were men with mean age of 41.7 years. Of these, 32% were submitted to initial surgical treatment and 68% received conservative treatment...
October 2016: Einstein
https://www.readbyqxmd.com/read/28072744/posterior-arthrodesis-of-c1-c3-for-the-stabilization-of-multiple-unstable-upper-cervical-fractures-with-spinal-cord-compromise-a-case-report-and-literature-review
#2
Deting Xue, Qixin Chen, Gang Chen, Wenhai Zhuo, Fangcai Li
BACKGROUND: Multiple fractures of the atlas and axis are rare. The management of multiple fragment axis fractures and unstable atlas fractures is still challenging for the spinal surgeon. There are no published reports of similar fractures with 3-part fracture of axis associated with an unstable atlas fracture. CASE SUMMARY: We present a patient with concurrent axis and atlas fractures, which have not been reported. The patient suffered hyperextension injury with neck pain and numbness of the bilateral upper extremity associated with weakness after a 2-m fall...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28054384/computational-anatomy-of-the-dens-axis-evaluated-by-quantitative-computed-tomography-implications-for-anterior-screw-fixation
#3
Dominic Gehweiler, Dirk Wähnert, Norbert Meier, Maarten Spruit, Michael Johannes Raschke, Robert Geoff Richards, Hansrudi Noser, Lukas Kamer
The surgical fracture fixation of the odontoid process (dens) of the second cervical vertebra (C2/axis) is a challenging procedure, particularly in elderly patients affected by bone loss, and includes screw positioning close to vital structures. The aim of this study was to provide an extended anatomical knowledge of C2, the bone mass distribution and bone loss, and to understand the implications for anterior screw fixation. 120 standard clinical quantitative computed tomography (QCT) scans of the intact cervical spine from 60 female and 60 male European patients, aged 18-90 years, were used to compute a three-dimensional statistical model and an averaged bone mass model of C2...
January 5, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28053266/predictors-of-mortality-following-conservatively-managed-fractures-of-the-odontoid-in-elderly-patients
#4
S Bajada, A Ved, A G Dudhniwala, S Ahuja
AIMS: Rates of mortality as high as 25% to 30% have been described following fractures of the odontoid in the elderly population. The aim of this study was to examine whether easily identifiable variables present on admission are associated with mortality. PATIENTS AND METHODS: A consecutive series of 83 elderly patients with a fracture of the odontoid following a low-impact injury was identified retrospectively. Data that were collected included demographics, past medical history and the results of blood tests on admission...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28050699/the-challenging-fractures-of-the-odontoid-process-a-review-of-the-classification-schemes
#5
REVIEW
Dimitrios S Korres, Dimitrios G Chytas, Konstantinos N Markatos, Nicolaos E Efstathopoulos, Vasileios S Nikolaou
Fractures of the odontoid process seem to have an unclear and not well-understood behavior. This is well demonstrated in the literature as there is a disagreement in many fields, including the patterns of fractures, the percentage of pseudarthrosis or the appropriate treatment that is required. This situation makes the fracture itself a "challenging" one. Indeed, despite the existence of extensive literature, there are still many unresolved problems concerning these fractures. We recognize six main classification schemes of the odontoid process fractures which clearly demonstrate the presence of differences but, also, the disadvantages that these classifications are related to...
January 3, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28048882/su-f-p-25-dosimetric-changes-of-brainstem-caused-by-weight-loss-during-intensity-modulated-radiation-therapy-for-nasopharyngeal-carcinoma
#6
W Hu, C Yu, Y Cai, X Zhou, W Wang, H Yang
PURPOSE: To explore dosimetric effects of brainstem (BS) caused by weight loss during the course of intensity-modulated radiation therapy (IMRT) for nasopharyngeal carcinoma (NPC). METHODS: Seventy-seven patients who were diagnosed with NPC by pathology biopsy have been enrolled. Every patients should receive weight measurement weekly and three times of computed tomography (CT) scans and replanning, at the 15th and 25th fraction during the treatment, respectively...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28028444/commentary-on-the-management-of-type-ii-odontoid-process-fractures-in-octogenarians-article-by-graffeo-et-al-and-editorial-by-falavigna-j-neurosurgery-spine-august-19-2016
#7
Nancy E Epstein
BACKGROUND: Establishing a clear treatment paradigm for octogenarians with type II odontoid fractures in hampered by a literature replete with level III articles. METHODS: In the study by Graffeo et al., the authors evaluated 111 patients over the age of 79 (average age: 87) with type II odontoid fractures undergoing nonoperative (94 patients) vs. operative intervention (17 total; 15 posterior and 2 anterior). They studied multiple variables and utilized several scales [abbreviated injury scale (AIS), injury severity score (ISS), and the Glasgow coma scale (GCS)] to determine the outcomes of nonoperative vs...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/28012078/odontoid-osteomyelitis-with-atlantoaxial-subluxation-in-an-infant
#8
Hoon Park, Hyung Kwon Byeon, Hak-Sun Kim, Jung Jun Hong, Kyung-Soo Suk
PURPOSE: To report a rare case of odontoid osteomyelitis with atlantoaxial subluxation in a 6-month-old infant. BACKGROUND: Odontoid osteomyelitis with atlantoaxial subluxation is extremely rare in children. Although several cases have been reported, there have been no studies concerning proper surgical drainage and immobilization in this disease. METHODS: A 6-month-old infant with odontoid osteomyelitis with atlantoaxial subluxation was surgically treated...
December 23, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27990259/anterior-single-odontoid-screw-placement-for-type-ii-odontoid-fractures-our-modified-surgical-technique-and-initial-results-in-a-cohort-study-of-15-patients
#9
Binod Bhattarai, Sunil Munakomi, Karuna Tamrakar, Pramod Kumar Chaudhary
Objective: Anterior odontoid screw fixation for type II odontoid fracture is the ideal management option. However in the context of unavailability of an O-arm or neuro-navigation and poor images from the available C-arm may be an obstacle to ideal trajectory and placement of the odontoid screw. We herein detail  our surgical technique so as to ensure a correct trajectory and subsequent good fusion in Type II odontoid fractures. This may be advantageous  in clinical set ups lacking state of the art facilities...
2016: F1000Research
https://www.readbyqxmd.com/read/27989979/conservative-management-for-odontoid-cervical-fractures-halo-or-rigid-cervical-collar
#10
Fabio Torregrossa, Giovanni Grasso
No abstract text is available yet for this article.
October 27, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27979613/mucopolysaccharidosis-iva-and-glycosaminoglycans
#11
REVIEW
Shaukat Khan, Carlos J Alméciga-Díaz, Kazuki Sawamoto, William G Mackenzie, Mary C Theroux, Christian Pizarro, Robert W Mason, Tadao Orii, Shunji Tomatsu
Mucopolysaccharidosis IVA (MPS IVA; Morquio A: OMIM 253000) is a lysosomal storage disease with an autosomal recessive trait caused by the deficiency of N-acetylgalactosamine-6-sulfate sulfatase. Deficiency of this enzyme leads to accumulation of specific glycosaminoglycans (GAGs): chondroitin-6-sulfate (C6S) and keratan sulfate (KS). C6S and KS are mainly produced in the cartilage. Therefore, the undegraded substrates are stored primarily in cartilage and in its extracellular matrix (ECM), leading to a direct impact on cartilage and bone development, and successive systemic skeletal dysplasia...
November 29, 2016: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/27977443/anterior-versus-posterior-approaches-for-odontoid-fracture-stabilization-in-patients-older-than-65-years-30-day-morbidity-and-mortality-in-a-national-database
#12
Joseph T Patterson, Alexander A Theologis, David Sing, Bobby Tay
STUDY DESIGN: Retrospective cohort analysis. OBJECTIVE: To compare 30-day perioperative clinical outcomes of surgical odontoid stabilization by an anterior or posterior operative approach in elderly patients. SUMMARY OF BACKGROUND DATA: Surgical stabilization of odontoid fractures is superior to nonoperative management in geriatric patients. How elderly patients with odontoid fractures fare after anterior and posterior approaches, however, is not well defined...
December 13, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27975351/-3d-fluoroscopy-navigated-magerl-fusion-of-the-1st-and-2nd-cervical-vertebra
#13
G Stein, G Schiffer, J Bredow, C Meyer
Background: Treatment of type II fractures of the odontoid process is still controversial. Besides conservative treatment, there are surgical options, including anterior screw fixation, as first described by Böhler and Magerl, or procedures using a dorsal approach. Many authors prefer dorsal fusion of C1 and 2, due to the reliable, biomechanical stability. In this context, pedicle screw fixation, as described by Harms, and transarticular screw fixation of the atlantoaxial joints, as described by Magerl, have to be mentioned...
December 2016: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/27906741/halo-vest-immobilization-in-elderly-odontoid-fracture-patients-evolution-in-treatment-modality-and-in-hospital-outcomes
#14
J Mason DePasse, Mark A Palumbo, Abdul-Kareem Ahmed, Charles A Adams, Alan H Daniels
STUDY DESIGN: Retrospective cohort study. OBJECTIVE: To evaluate the utilization and effectiveness of halo-vest (HV) immobilization for type II odontoid fractures from 2004 to 2014. SUMMARY OF BACKGROUND DATA: Controversy persists regarding the optimal treatment method for odontoid fractures in the elderly. Management options include immobilization in a cervical orthosis, HV immobilization, and operative intervention. Over the past decade, high mortality and morbidity rates have been reported following HV immobilization in this patient population...
November 30, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27902956/usefulness-of-cervical-computed-tomography-and-magnetic-resonance-imaging-for-rapid-diagnosis-of-crowned-dens-syndrome-a-case-report-and-review-of-the-literature
#15
Akihiro Inoue, Kanehisa Kohno, Satoko Ninomiya, Hitomi Tomita, Shinji Iwata, Shiro Ohue, Kenji Kamogawa, Kensho Okamoto, Shinya Fukumoto, Haruhisa Ichikawa, Shinji Onoue, Saya Ozaki, Bungo Okuda
INTRODUCTION: Crowned dens syndrome is a rare disease entity which radiologically shows calcification of the cruciform ligament around the odontoid process. We report a patient with crowned dens syndrome who improved dramatically in 5days following treatment with oral nonsteroidal anti-inflammatory medication. PRESENTATION OF CASE: A 61-year-old man was admitted to our hospital with a severe occipital headache and sudden onset of neck stiffness. Neurological examination on admission revealed a high fever and cervical rigidity...
November 23, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27901084/development-of-mouthparts-in-the-cicada-meimuna-mongolica-distant-successive-morphological-patterning-and-sensilla-differentiation-from-nymph-to-adult
#16
Yanan Hao, Christopher H Dietrich, Wu Dai
Development of the mouthparts in the cicada Meimuna mongolica (Distant) is investigated here for the first time using scanning electron microscopy in order to document changes occurring in different nymphal instars and from nymph to adult, during which a shift from subterranean root-feeding to feeding on aboveground parts of the host plant occurs. The structure and component of mouthparts is similar to those found in other hemipteran insects. Fourteen types of sensilla and five types of cuticular processes were found on the mouthparts of nymphs and adults...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27898508/the-need-for-a-comprehensive-classification-for-non-apical-non-basal-odontoid-fracture-orientation-guided-by-synthesis-biomechanics
#17
Javier Melchor Duart-Clemente, Luis Álvarez-Galovich, Félix Tomé Bermejo, Ángel Piñera Parrilla, Charles Mengis Palleck, Julio Albisua Sánchez, Julio Vicente Duart Clemente
No abstract text is available yet for this article.
November 24, 2016: Spine
https://www.readbyqxmd.com/read/27891029/craniovertebral-junction-360%C3%A2-a-combined-microscopic-and-endoscopic-anatomical-study
#18
Sukhdeep Singh Jhawar, Maximiliano Nunez, Paolo Pacca, Daniel Seclen Voscoboinik, Huy Truong
OBJECTIVES: Craniovertebral junction (CVJ) can be approached from various corridors depending on the location and extent of disease. A three-dimensional understanding of anatomy of CVJ is paramount for safe surgery in this region. Aim of this cadaveric study is to elucidate combined microscopic and endoscopic anatomy of critical neurovascular structures in this area in relation to bony and muscular landmarks. MATERIALS AND METHODS: Eight fresh-frozen cadaveric heads injected with color silicon were used for this study...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27889860/rich-but-poor-life-in-the-roman-period-with-extreme-rheumatoid-arthritis
#19
REVIEW
Željana Bašić, Ivan Jerković, Ivana Kružić, Šimun Anđelinović
In a Sidonian sarcophagus, from the Late Antique/early Christian period, skeletal remains of two persons were found. One of them, male, 30-50 years old, was found almost completely ankylosed, with highly osteoporotic bones and prominent erosion of joint surfaces. We diagnosed rheumatoid arthritis based on the eroded odontoid process, mandibular condyles, distal humerus, proximal and distal ulna, as well ankylosed hand and foot bones. Despite the fact that ankyloses of vertebrae and sacroiliac joint could point towards ankylosing spondylitis, the lack of typical vertebral ankyloses and new bone formation led to exclusion...
November 26, 2016: Clinical Rheumatology
https://www.readbyqxmd.com/read/27888089/quantitative-measurements-of-the-skull-base-and-craniovertebral-junction-in-congenital-occipitalization-of-the-atlas-a-ct-based-anatomical-study
#20
Rui Zong, Yiheng Yin, Guangyu Qiao, Yazhou Jin, Xinguang Yu
BACKGROUND: To study the craniovertebral junction (CVJ) and determine the anatomical characteristics of occipitalization of the atlas (OC) by computed tomography imaging. METHODS: We retrospectively reviewed 80 cases of patients with OC who underwent cervical CT scanning between March 2012 and March 2014. Forty healthy subjects were recruited as a control cohort. Fusion pattern and associated osseous anomalies were recorded. Fifteen linear quantitative parameters were measured to study the outlet of the foramen magnum, angular dimension of the skull base, posterior cranial fossa, and height of the odontoid process...
November 22, 2016: World Neurosurgery
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