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Odontoid fracture

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https://www.readbyqxmd.com/read/28628156/-atlantoaxial-reduction-and-fixation-guided-by-the-intraoperative-ct
#1
(no author information available yet)
OBJECTIVE: To evaluate the clinical result of atlantoaxial reduction and fixation guided by the intraoperative CT. METHODS: Sixteen cases were retrospectively studied, including seven males and nine females, with the mean age of 49.9 years. Twelve cases were diagnosed as chronic atlantoaxial instability or dislocation, while four cases as acute odontoid fracture and dislocation. Among the sixteen cases, fourteen underwent atlantoaxial fusion, while two underwent temporary atlantoaxial fixation without fusion...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28627291/early-complications-morbidity-and-mortality-in-octo-and-nonagenarians-undergoing-posterior-intraoperative-spinal-navigation-based-c1-2-fusion-for-type-ii-odontoid-process-fractures
#2
Basem Ishak, Till Schneider, Valerie Gimmy, Andreas W Unterberg, Karl L Kiening
Type II odontoid fractures represent the most common cervical spine injury in the elderly. The decision for surgical treatment is still controversial, particularly with regard to the elevated perioperative risk attributed to frequent comorbidities and poor bone quality. Purpose of this study was to assess both short-term mortality and mid-term clinical and radiological outcome in the elderly. Between January 2007 and December 2015, 35 patients with type II odontoid process fractures who underwent posterior atlanto-axial instrumentation using a modified Goel-Harms technique were retrospectively analyzed and prospectively examined clinically and radiologically...
June 18, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28608179/anterior-submandibular-retropharyngeal-odontoid-osteotomy-and-posterior-atlantoaxial-fusion-for-irreducible-atlantoaxial-dislocation-associated-with-odontoid-fracture-malunion
#3
Cheng Li, Jingzhu Duan, Lei Li
PURPOSE: To report a case of complex odontoid fracture malunion accompanied by atlantoaxial dislocation which was treated with a new surgical approach. METHODS: A 53-year-old female was admitted due to progressive symptoms with a stiff limp and unsteady gait. Preoperative examination, diagnostic radiography, computed tomography, and magnetic resonance imaging were performed following admission. The examinations showed odontoid fracture malunion, an old right axial zygapophyseal fracture, atlantoaxial dislocation, and spinal cord injury...
June 12, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28525479/outcome-of-bilateral-c1-laminar-hooks-combined-with-c2-pedicle-screw-fixation-for-the-treatment-of-c1-c2-instability-a-report-of-18-cases-from-a-single-chinese-center
#4
Lifeng Lao, Guibin Zhong, Qianyi Li, Xinfeng Li, Bin Chen, Lie Qian, Zude Liu
STUDY DESIGN: A retrospective technical report. OBJECTIVE: To assess the effect of bilateral C1 laminar hooks combined with C2 pedicle screw fixation for the treatment of C1-C2 instability. SUMMARY OF BACKGROUND DATA: Various posterior atlantoaxial fixations for C1-C2 instability have been developed. However, due to anatomic anomalies of the vertebral artery, the smallness of the pedicle, trajectories of broken screws, or a lack of surgical experience, a simple atlantoaxial fixation technique with good safety and effectiveness is urgently needed...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28522382/brain-abscess-following-halo-fixation-for-the-cervical-spine
#5
Arthur Lopes, Almir Andrade, Igor Silva, Wellingson Paiva, Roger Brock, Manoel Teixeira
BACKGROUND: Halo fixation is one of the possible treatments for cervical spine fractures. However, improper use of these devices may lead to many complications, such as pin loosening, halo dislocation, pin site infection, and intradural penetration. CASE DESCRIPTION: We report a 43-year-old man who first presented with a seizure and an altered level of consciousness five months after halo-vest placement for an odontoid fracture. Brain imaging revealed a brain abscess, under the previous left parietal pin...
May 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28512042/the-corona-dentis-description-of-an-anatomical-variant-with-technical-implications-for-anterior-odontoid-screw-placement
#6
Fernando Alonso, Joe Iwanaga, Jens R Chapman, Rod J Oskouian, R Shane Tubbs
INTRODUCTION: Type 2 odontoid fractures are the most common cervical fractures among the elderly. Neurological deficit is usually caused as a result of myelopathy due to posterior dens migration. Direct anterior screw placement provides stabilization and can preserve C1-C2 movement. The presence of a bony excrescence on the anterior superior tip of the dens may lead to placement of a screw of incorrect length. METHODS: Twenty C2 dry specimens were examined for the presence of a corona dentis, which is a bony excrescence in the coronal plane near the apex of the dens...
May 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28498058/endoscopic-endonasal-resection-of-the-odontoid-process-clinical-outcomes-in-34-adults
#7
Nathan T Zwagerman, Matthew J Tormenti, Zachary J Tempel, Eric W Wang, Carl H Snyderman, Juan C Fernandez-Miranda, Paul A Gardner
OBJECTIVE Treatment of odontoid disease from a ventral corridor has consisted of a transoral approach. More recently, the endoscopic endonasal approach (EEA) has been used to access odontoid pathology. METHODS A retrospective review was conducted of patients who underwent an EEA for odontoid pathology from 2004 to 2013. During our analysis, the mean follow-up duration was 42.6 months (range 1-80 months). Patient outcomes, complications, and postoperative swallowing function were assessed either by clinic visit or phone contact...
May 12, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28459776/postoperative-regression-of-retro-odontoid-pseudotumor-after-atlantoaxial-posterior-fixation-11-years-of-experience-in-patients-with-atlantoaxial-instability
#8
Jung Hyun Park, Eugene Lee, Joon Woo Lee, Yusuhn Kang, Joong Mo Ahn, Jin S Yeom, Heung Sik Kang
STUDY DESIGN: Case series study. OBJECTIVE: The aim was to investigate the incidence of retro-odontoid pseudotumor in patients with atlantoaxial instability (AAI) and evaluate pseudotumor regression after posterior fixation. SUMMARY OF BACKGROUND DATA: The incidence of retro-odontoid pseudotumor in atlantoaxial instability patients remains uncertain. Moreover, the regression of retro-odontoid pseudotumor after posterior fixation in patients with various underlying diseases needs to be further investigated...
April 28, 2017: Spine
https://www.readbyqxmd.com/read/28422889/an-in-vitro-biomechanical-evaluation-of-an-expansive-double-threaded-bi-directional-compression-screw-for-fixation-of-type-ii-odontoid-process-fractures-a-squire-compliant-article
#9
Ning Liu, Li Tian, Rong-Xian Jiang, Chao Xu, Lei Shi, Wei Lei, Yang Zhang
Odontoid process fracture accounts for 5% to 15% of all cervical spine injuries, and the rate is higher among elderly people. The anterior cannulated screw fixation has been widely used in odontoid process fracture, but the fixation strength may still be limited under some circumstances. This study aims to investigate the biomechanical fixation strength of expansive double-threaded bi-directional compression screw (EDBCS) compared with cannulated lag screw (CLS) and improved Herbert screw (IHS) for fixation of type II odontoid process fracture...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28409288/temporary-fusionless-posterior-occipitocervical-fixation-for-a-proximal-junctional-type-ii-odontoid-fracture-after-previous-c2-pelvis-fusion-case-report-description-of-a-new-surgical-technique-and-review-of-the-literature
#10
Alexander A Theologis, Vedat Deviren, Bobby Tay
PURPOSE: Axial fractures in patients with a previous C2-pelvis posterior instrumented fusion are rare and may be challenging to manage. Motion preservation in the axial spine for these patients is important, as the C1-2 and Occipit-C1 joints are their only remaining mobile spinal segments. In this unique report, we present for the first time the use of a fusionless occipitocervical operation for the treatment of a type II odontoid fracture and unilateral C2 pars fracture adjacent to a previous C2-pelvis posterior instrumented fusion...
May 2017: European Spine Journal
https://www.readbyqxmd.com/read/28403693/anterior-retropharyngeal-plate-screw-fixation-with-bilateral-anterior-transarticular-screws-for-odontoid-fractures-a-new-comprehensive-technique
#11
Sushil Patkar
INTRODUCTION: A certain group of odontoid fractures (Anderson and D' Alonzo Type-2) are usually offered surgical treatment. Common surgical option is an anterior odontoid screw. Some of the fractures are not suitable for anterior odontoid screw (anterior oblique, displaced distal fragments and those with atlantoaxial instability) and these are usually offered posterior transarticular screws (Magerl's) or posterior atlantoaxial screw rod/plate fixation (Goel-Harms technique). Posterior surgery involves atlantoaxial fixation with an indirect attempt to reduce and fuse the fracture ...
April 13, 2017: Neurological Research
https://www.readbyqxmd.com/read/28399555/management-of-unusual-atlantoaxial-dislocation
#12
Ruipeng Song, Daoyang Fan, Han Wu, Zhen Zhang, Liang Zhao, Yilin Liu, Wensheng Liao, Hongyu Tan, Limin Wang, Weidong Wang
STUDY DESIGN: A case report and review of the literature. OBJECTIVE: The aim of this study was to describe the successful treatment of one posterior atlantoaxial dislocation without fracture and to review the relevant literature. SUMMARY OF BACKGROUND DATA: Posterior atlantoaxial dislocation without fracture of the odontoid process is extremely rare. Management of these patients is still unknown. METHODS: A posterior atlantoaxial dislocation without fracture in a 58-year-old man with incomplete quadriplegia was treated surgically with posterior atlantoaxial pedicle screws internal fixation and fusion after closed reduction...
April 15, 2017: Spine
https://www.readbyqxmd.com/read/28345069/an-uncommon-case-mimicking-cervical-trauma-os-odontoideum
#13
Idiris Altun, Kasim Zafer Yuksel
Os odontoideum is a separate odontoid process from the body of the axis. It is the most common anomaly of the odontoid process. Patients with this condition can be asymptomatic or present with a wide range of neurological dysfunctions. It may cause cervical instability, atlantoaxial dislocation and myelopathy. This anomaly can mimic Type I and II odontoid fractures. There is a role for conservative treatment of an asymptomatic incidentally found, radiologically stable and non-compressive os odontoideum. However, surgical treatment has a definitive role in symptomatic cases...
March 2017: Turkish Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28256741/osteoporosis-is-the-most-important-risk-factor-for-odontoid-fractures-in-the-elderly
#14
Johannes Kaesmacher, Claudia Schweizer, Alexander Valentinitsch, Thomas Baum, Anna Rienmüller, Bernhard Meyer, Jan S Kirschke, Yu-Mi Ryang
Traumatic odontoid fractures (TOFs) have been described as the most common injury affecting the C-spine in the elderly. Previous studies have identified degenerative changes and bone loss as important predisposing factors. However, their interaction and respective age-adjusted impact needs further clarification. We conducted a retrospective analysis of 5303 patients (aged ≥60 years) admitted to a level I trauma center between January 2008 and January 2016 who underwent CT imaging of the C-spine. Ninety-two patients with TOF and 80 patients with other cervical spine fractures (OCSF) were identified and a respective 3:1 age- and sex-matched control group without fractures after trauma was built...
March 3, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28255505/odontoid-fracture-in-a-patient-with-diffuse-idiopathic-skeletal-hyperostosis
#15
Adan Omar, Addisu Mesfin
Nonoperative management of fractures in the setting of diffuse idiopathic skeletal hyperostosis (DISH) or ankylosing spondylitis is often unsuccessful. The subaxial spine is a common site of hyperextension fractures in the setting of DISH. Fractures of the upper cervical spine are uncommon in DISH. We report, to our knowledge, the first case describing successful nonoperative management of a type 2 odontoid fracture in a patient with DISH. We discuss the patient's initial presentation, physical examination, imaging findings, and management...
March 2017: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/28253944/-management-of-odontoid-fractures-with-compression-screw-and-anterior-transarticular-screw-fixation-in-elderly-patients
#16
J Kočiš, M Kelbl, R Veselý, T Kočiš
PURPOSE OF THE STUDY In the management of dens axis fractures in patients older than 65 years of age the posterior approach is preferred due to osteoporosis and the risk of a failure of anterior osteosynthesis. The posterior approach, however, is associated with a higher incidence of complications. A combination of anterior transarticular fixation of C1/2 (ATS) with compression osteosynthesis of dens axis significantly increases the stability of osteosynthesis. MATERIAL AND METHODS In the period from 2009 to 2015 our hospital admitted 13 patients older than 65 years of age with a diagnosed type III dens axis fracture based on AO classification...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28250639/patient-reported-outcome-following-nonsurgical-management-of-type-ii-odontoid-process-fractures-in-adults
#17
Maged D Fam, Hussein A Zeineddine, Rafiq Muhammed Nassir, Pragnesh Bhatt, Mahmoud H Kamel
BACKGROUND: Transverse (type II) odontoid process fracture is among the most commonly encountered cervical spine fractures. Nonsurgical management through external immobilization is occasionally preferred to surgical management but is criticized for its higher rates of failure and lower patient satisfaction. Our aim is to analyze patient-reported outcomes in patients who underwent nonsurgical treatment for type II odontoid fractures. METHODS: We identified patients >18-year-old who underwent external immobilization as a treatment for isolated type II odontoid fracture between 2007 and 2012...
January 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28250633/top-50-most-cited-articles-on-craniovertebral-junction-surgery
#18
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/28243364/biomechanical-assessment-of-stabilization-of-simulated-type-ii-odontoid-fracture-with-case-study
#19
Roy T Daniel, Mir M Hussain, Noelle Klocke, Soumya S Yandamuri, Lukas Bobinski, John M Duff, Brandon S Bucklen
STUDY DESIGN: Researchers created a proper type II dens fracture (DF) and quantified a novel current posterior fixation technique with spacers at C1-C2. A clinical case study supplements this biomechanical analysis. PURPOSE: Researchers explored their hypothesis that spacers combined with posterior instrumentation (PI) reduce range of motion significantly, possibly leading to better fusion outcomes. OVERVIEW OF LITERATURE: Literature shows that the atlantoaxial joint is unique in allowing segmental rotary motion, enabling head turning...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28229224/factors-affecting-survival-of-patients-in-the-acute-phase-of-upper-cervical-spine-injuries
#20
Tomonori Morita, Tsuneo Takebayashi, Hideto Irifune, Hirofumi Ohnishi, Suguru Hirayama, Toshihiko Yamashita
INTRODUCTION: In recent years, on the one hand, the mortality rates of upper cervical spine injuries, such as odontoid fractures, were suggested to be not so high, but on the other hand reported to be significantly high. Furthermore, it has not been well documented the relationship between survival rates and various clinical features in those patients during the acute phase of injury because of few reports. This study aimed to evaluate survival rates and acute-phase clinical features of upper cervical spine injuries...
April 2017: Archives of Orthopaedic and Trauma Surgery
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