keyword
https://read.qxmd.com/read/32217183/novel-in-situ-open-reduction-and-fixation-of-a-displaced-type-ii-odontoid-fracture-case-report-and-technical-note
#21
Daphne Li, Elhaum Rezaii, G Alexander Jones
No abstract text is available yet for this article.
March 23, 2020: World Neurosurgery
https://read.qxmd.com/read/32214309/endoscopically-assisted-percutaneous-unilateral-atlantoaxial-screw-rod-nonfusion-fixation-treatment-for-type-ii-odontoid-fractures-in-geriatric-patients-case-series-and-technical-note
#22
Lei Shi, Rui Deng, Qing-Yan Long, Lei Chu, Ke-Xiao Yu, Zhou Xu, Zhong-Liang Deng
BACKGROUND: Considerable controversy exists regarding the optimal treatment for type II odontoid fractures in geriatric patients. Surgical intervention can help patients return to their prior level of function as rapidly as possible while avoiding the morbidity and mortality associated with prolonged and bedbound hospitalization. However, the optimal treatment is still a difficult choice for patients with increased risk from anesthesia. OBJECTIVES: The objective of our study was to describe an innovative method of endoscopically-assisted percutaneous unilateral C1 lateral mass screw and C2 pedicle screw-rod nonfusion fixation for type II odontoid fractures in geriatric patients...
March 2020: Pain Physician
https://read.qxmd.com/read/32175422/anterior-decompression-through-transoral-axis-slide-and-rotation-osteotomy-for-salvage-of-failed-posterior-occipitocervical-fusion-a-novel-technique-note
#23
Aimin Wu, Haiming Jin, Haicheng Dou, Xiangxiang Pan, Sunren Sheng, Chongan Huang, Xiangyang Wang
Atlantoaxial dislocation could be caused by odontoid fractures or Os odontoideum. The previous surgical techniques in treatment of atlantoaxial dislocation were based on arch remove decompression or anterior atlantoaxial release and atlantoaxial (occipital-cervical) screw fixation-based reduction and fusion. However, for some clinical situations, all of above techniques cannot be applied. In this study, a patient with atlantoaxial dislocation caused by Os odontoideum treated by posterior occipitocervical fusion 20 years ago and failed...
February 2020: Annals of Translational Medicine
https://read.qxmd.com/read/32173550/miniplate-augmented-interlaminar-fusion-in-c1-c2-screwing
#24
Po-Jen Huang, Jiann-Her Lin, Yung-Hsiao Chiang
OBJECTIVE: The interlaminar fusion combination involving C1-C2 screwing fixation is one of the most effective techniques for atlantoaxial dislocation or subluxation, and the bone graft is usually stabilized by wiring constructs. However, some adverse events were reported during the insertion of sublaminar wiring, such as accidentally damaging the spinal cord or dura. Thus, we used the miniplate to stabilize the harvest bone graft on the C1-C2 laminar, which led to a shorter operation time and prevented spinal canal violation...
March 12, 2020: World Neurosurgery
https://read.qxmd.com/read/32151771/conservative-versus-surgical-treatment-for-odontoid-fracture-is-the-surgical-treatment-harmful-systematic-review-and-meta-analysis
#25
REVIEW
Benjamin Pommier, Edouard Ollier, Jean-Baptiste Pelletier, Xavier Castel, François Vassal, Marie-Charlotte Tetard
BACKGROUND: Odontoid fracture is a common injury especially in elderly people. Despite some recent studies arguing in favor of surgery, the best treatment is still being debated. OBJECTIVE: Here we systematically review and analyze the comparative literature between surgical and conservative treatments of odontoid fractures. METHOD: We systematically searched Medline and Cochrane library for studies published from January 1990 to May 2019 in English language...
March 6, 2020: World Neurosurgery
https://read.qxmd.com/read/32130845/neglected-odontoid-fracture-during-growth
#26
Joon Sung Kim, Bo Young Hong, Seong Hoon Lim
No abstract text is available yet for this article.
February 2020: Annals of Rehabilitation Medicine
https://read.qxmd.com/read/32128304/computerized-tomography-based-morphometric-analysis-of-odontoid-in-100-egyptian-patients
#27
Nirmal D Patil, Mohammad Essam, Raafat Kamal Ragab, Hesham Elsaghir
Background: There is still no consensus in the literature regarding the use of 1 screw or 2 screws. A number of studies have proved ethnic variations in the morphometry of the odontoid. There is no literature on the morphometry of odontoid in Egyptian patients. Methods: Computerized tomography (CT) scans of the head and cervical spine of 100 healthy (no evidence of cervical spine fracture) patients of Egyptian origin were studied. Measurements were performed using Horos software, which allowed exact morphometric measurements to be taken at a specific angle in the axial, coronal, and sagittal planes...
February 2020: International Journal of Spine Surgery
https://read.qxmd.com/read/32125438/-application-of-transarticular-c1-2-screws-connected-with-c1-lateral-mass-screws-in-a-rod-screw-system
#28
Ali Harati, Paul Oni
Fractures of the second cervical vertebra with involvement of the odontoid process can mostly be treated conservatively by immobilization. In the case of high-grade unstable fractures and pseudarthrosis dorsal C1/2 spondylodesis should be considered.Based on established atlantoaxial osteosynthesis techniques for dorsal C1/2 spondylodesis, a polyaxial screw-rod system with C1/2 transarticular screws connected with C1 lateral mass screws was carried out in a 56-year-old male patient with dislocated odontoid fracture...
March 3, 2020: Der Unfallchirurg
https://read.qxmd.com/read/32094064/early-mortality-and-morbidity-of-odontoid-fractures-after-70-years-of-age
#29
Jeremy Allia, Hugo Darmanté, Laurent Barresi, Fernand De Peretti, Christophe Trojani, Nicolas Bronsard
INTRODUCTION: Odontoid fractures are very common in older adults and are associated with a high mortality rate. The aim of this study was to evaluate the outcomes after conservative treatment of non-displaced odontoid fractures and surgical treatment of displaced fractures in patients older than 70 years. It was hypothesized that early mortality of displaced fractures is higher than in non-displaced fractures. MATERIAL AND METHODS: This was a single-center retrospective observational study of odontoid fractures (type II in the Anderson and Alonzo classification) in patients older than 70 years that occurred between 2014 and 2017...
February 21, 2020: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://read.qxmd.com/read/32061955/posterior-arch-screw-for-type-ii-odontoid-fracture-an-alternative-procedure
#30
K Ragurajaprakash, Junya Hanakita, Toshiyuki Takahashi, Manabu Minami, Yoshitaka Tsujimoto, Ryo Kanematsu
No abstract text is available yet for this article.
February 13, 2020: World Neurosurgery
https://read.qxmd.com/read/32043851/minimally-invasive-percutaneous-anterior-odontoid-screw-fixation-institutional-experience-with-a-simple-and-effective-technique
#31
Giuseppe E Umana, Massimiliano Visocchi, Gianluca Scalia, Maurizio Passanisi, Marco Fricia, Saverio Fagone, Giovanni Nicoletti, Salvatore Cicero
BACKGROUND: To show a novel modified technique to perform minimally invasive anterior odontoid screw fixation. METHODS: Twenty-nine patients with a mean age of 45 years were treated with a modified percutaneous anterior odontoid screw fixation. All patients were affected by Type II or rostral shallow Type III odontoid fractures. A modified guide tube was used in all these patients, with reduction of soft tissue dissection for percutaneous approach. RESULTS: There were no complications related to the modified technique...
February 10, 2020: Journal of Neurosurgical Sciences
https://read.qxmd.com/read/31977608/os-odontoideum-in-children
#32
Daniel J Hedequist, Andrew Z Mo
Os odontoideum is a rare entity of the second cervical vertebra, characterized by a circumferentially corticated ossicle separated from the body of C2. The ossicle is a distinct entity from an odontoid fracture or a persistent ossiculum terminale. The diagnosis may be made incidentally on imaging obtained for the workup of neck pain or neurologic signs and symptoms. Diagnosis usually can be made with plain radiographs. MRI and CT can assess spinal cord integrity and C1-C2 instability. The etiology of os odontoideum is a topic of debate, with investigative studies supporting both congenital and traumatic origins...
February 1, 2020: Journal of the American Academy of Orthopaedic Surgeons
https://read.qxmd.com/read/31952043/biomechanical-evaluation-of-two-alternative-techniques-to-the-goel-harms-technique-for-atlantoaxial-fixation-c1-lateral-mass-c2-bicortical-translaminar-screw-fixation-and-c1-lateral-mass-c2-3-transarticular-screw-fixation
#33
Yue-Qi Du, Teng Li, Chao Ma, Guang-Yu Qiao, Yi-Heng Yin, Xin-Guang Yu
OBJECTIVE: The authors conducted a study to investigate the biomechanical feasibility and stability of C1 lateral mass-C2 bicortical translaminar screw (C1LM-C2TL) fixation, C1 lateral mass-C2/3 transarticular screw (C1LM-C2/3TA) fixation, and C1LM-C2/3TA fixation with transverse cross-links (C1LM-C2/3TACL) as alternative techniques to the Goel-Harms technique (C1 lateral mass-C2 pedicle screw [C1LM-C2PS] fixation) for atlantoaxial fixation. METHODS: Eight human cadaveric cervical spines (occiput-C7) were tested using an industrial robot...
January 17, 2020: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/31937631/neurological-recovery-after-surgical-intervention-of-a-complete-spinal-cord-injury-secondary-to-a-chronic-untreated-odontoid-neck-fracture-a-lesson-in-patient-prognostication
#34
Patricio Iii Espinoza Dumlao, Samuel Grozman
Odontoid fractures are injuries that can either be benign or devastatingly progress to quadriplegia and significant morbidity and mortality. Management is not clear cut for patients who already present late and with severe neurological deficits. We present a case of a type 2 odontoid fracture with associated complete spinal cord injury (American Spinal Injury Association A) initially untreated for 3 months but was subsequently managed with posterior decompression, instrumentation and occipitocervical fusion...
January 13, 2020: BMJ Case Reports
https://read.qxmd.com/read/31903373/traumatic-atlantoaxial-dislocation-with-an-odontoid-fracture-a-rare-and-potentially-fatal-injury
#35
Khaled Zitouna, Hend Riahi, Nabil Ben Lassoued, Mohamed Amine Selmene, Maher Barsaoui, Ghassen Drissi
Traumatic dislocation of the atlanto-axial joint in combination with an odontoid fracture remains a rare entity. Beaucause of its instability, it's alsoo a seriuous injury. A fatal outcome is feared especially in elderly. We report a case of 74-year-old man who presented with neck pain Confusion and spastic tetraparesia after a low energy trauma. Radiographs and computed tomography demonstrated a C1C2 dislocation with odontoid fracture. After an unsuccessful attempt at closed reduction with halo traction, a surgical stabilisation was performed using a posterior approach...
October 2019: Asian Journal of Neurosurgery
https://read.qxmd.com/read/31902000/cement-augmentation-of-odontoid-peg-fractures-the-effect-of-cement-volume-and-distribution-on-construct-stiffness
#36
Lukas Capek, Petr Rehousek, Petr Henys, Sabri Bleibleh, Edward Jenner, Marketa Kulvajtova, Jiri Skala-Rosenbaum
PURPOSE: The cement augmentation of a conventional anterior screw fixation in type II odontoid process fractures for elderly patients significantly increased stiffness and load to failure under anterior-posterior load in comparison with non-augmented fixation. The amount and quality of bone cement are usually taken ad hoc in clinical practise. In this study, we wanted to clarify the role of bone cement amount and its quality to the stiffness of odontoid and vertebrae body junction. METHODS: Finite-element method was used to achieve different scenarios of cement augmentation...
January 4, 2020: European Spine Journal
https://read.qxmd.com/read/31863892/minimal-invasive-percutaneous-c1c2-fixation-using-an-intraoperative-3d-imaging-based-navigation-system-on-management-of-odontoid-fractures
#37
Mikael Meyer, Kaissar Farah, Thomas Graillon, Henry Dufour, Benjamin Blondel, Stephane Fuentes
INTRODUCTION: Odontoid fractures are the most common lesions of the upper cervical spine in patients above 70 years-old. These fractures are associated with frequent co-morbidities and minimal invasive techniques might have the potential to reduce postoperative complications while ensuring a better precision. The aim of this study is to report an innovative technique and the preliminary results of minimally invasive atlantoaxial fixation using 3D intraoperative navigation system and percutaneous approach...
December 18, 2019: World Neurosurgery
https://read.qxmd.com/read/31826602/-research-progress-of-odontoid-fracture-in-children
#38
S S Liu, Q Q Huang, Q Qi
The majority of cervical spine injuries in children occur in the upper cervical spine, of which odontoid fracture is the most common. Odontoid fracture in children is a very insidious injury. Due to the unclear language and incompatible physical examination, the disease is often missed diagnosis. Because the child axis is still in the developmental segment, including 4 synchondrosis and 6 ossification centers, there are obvious anatomical and biological differences between the child odontoid fracture and the adult...
December 1, 2019: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://read.qxmd.com/read/31823086/c1-c2-posterior-screw-fixation-in-atlantoaxial-fractures-revisited-technical-update-based-on-127-cases
#39
Niels Buchmann, Claudia Schweizer, Jan S Kirschke, Anna Rienmüller, Jens Gempt, Florian Ringel, Bernhard Meyer, Yu- Mi Ryang
INTRODUCTION: Posterior fusion of traumatic odontoid fractures by C1 lateral mass and C2 isthmic screws (modified Harms-Goel technique) is a viable alternative to transarticular screw fixation due to its universal applicability. This retrospective study reports on a series of 127 patients. MATERIAL AND METHODS: Our clinical database was screened for patients with fractures of the upper cervical spine incorporating a C2 fracture, operated on between 2007 and 2015...
December 10, 2019: European Spine Journal
https://read.qxmd.com/read/31821208/the-rare-anomaly-that-can-be-confused-with-fracture-os-odontoideum
#40
Fahri Aydin, Ummugulsum Bayraktutan, Recep Sade, Gokhan Polat, Berhan Pirimoğlu
Os odontoideum is a rare anomaly of the second cervical vertebra. The odontoid process is separated by a wide gap from the vertebral body in this anomaly. It can be associated with atlantoaxial instability.
December 9, 2019: Journal of Craniofacial Surgery
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