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Nagpal Tapan - - 2013
The endoscopic endonasal approach is emerging as a feasible alternative to the transoral route for the resection of the odontoid process, when the latter produces a compression of the brainstem and cervicomedullary junction. This type of approach has some advantages, such as excellent prevertebral exposure of the craniovertebral junction in ...
Relevancy Score: Relevancy Score: 544
Koivikko Mika P - - 2003
The classification of odontoid process fractures introduced by Anderson and D'Alonzo in 1974 has gained wide acceptance among researchers and clinicians. In type II fractures the injury is located in the base of the odontoid process. In 1988 Hadley et al. introduced a comminuted subtype of this fracture, type IIA. ...
Relevancy Score: Relevancy Score: 544
Diel P - - 2013
A type III fracture of the odontoid process according to Anderson-D'Alonzo in a 92-year-old patient was stabilized anteriorly with two double-threaded screws using the technique of Knöringer. Postoperatively, cranial dislocation of the screws was evident and attempts to correct the screw position failed resulting in screw proximity to the brain ...
Relevancy Score: Relevancy Score: 544
Pentelényi T - - 1988
In the period from 1981 to 1985, 32 odontoid fractures were treated in the National Institute of Traumatology. In 4 cases anterior stabilization was made with compression-screws from the ventral approach. Two cases of odontoid fractures are shown, one accompanied by ventral, the other by dorsal dislocation. A brief review ...
Relevancy Score: Relevancy Score: 543
Bednar D A - - 1995
After institutional review defined an unacceptable mortality rate in nonoperative treatment of elderly patients with odontoid process fracture without neurological deficit, we undertook a prospective study to determine the influence of early surgical stabilization on perioperative mortality in geriatric odontoid process fracture patients without neurologic injury. Analysis suggests that acute ...
Relevancy Score: Relevancy Score: 543
Patel Alpesh A - - 2010
Systematic review of literature. To determine the optimal indications and methods of surgical treatment for unstable type II odontoid fractures in skeletally mature individuals. Odontoid fractures are a frequently encountered injury pattern in the cervical spine. The surgical treatment of type II odontoid fractures varies among spinal surgeons. The optimal ...
Relevancy Score: Relevancy Score: 542
Wu Yung-Tsan - - 2010
STUDY DESIGN: Case report. OBJECTIVE: To present the second case of Brown-S?quard syndrome (BSS) produced by type III odontoid fracture managed by conservative treatment. SUMMARY OF BACKGROUND DATA: The occurrence of BSS due to odontoid fracture is scarce. So far 6 cases have been reported, and only 1 is produced ...
Relevancy Score: Relevancy Score: 542
Kaplan S L - - 1990
The first reported case of odontoid fracture in ankylosing spondylitis is presented with a review of the literature. Conservative management with halo-vest immobilization may be a reasonable approach in the patient with ankylosing spondylitis who poses a high surgical risk.
Relevancy Score: Relevancy Score: 541
Cantore G P - - 1988
Six patients under the age of 40 with fractures of the odontoid process (4 with Anderson type III and 2 with type II) were treated conservatively by immobilization in a halo device for 14-16 weeks. The indications for surgical and conservative treatment are discussed. Follow-up from 1 to 4 years.
Relevancy Score: Relevancy Score: 541
Bhagat S - - 2006
We describe a case of odontoid process fracture below the synchondrosis associated with delayed diagnosis and anterior subluxation of C1 over C2. This was treated with an in situ posterior occipitocervical fusion. Long-term follow-up of 7 years showed excellent remodelling of the deformity.
Relevancy Score: Relevancy Score: 541
Caesar B C - - 2005
A new technique is described for the removal of ligaments and soft tissue during a transoral resection of the odontoid process in a patient with rheumatoid arthritis. The technique employed is Coblation, a form of electrosurgery that operates at lower temperatures than conventional electrosurgical technique and, therefore, produces less collateral ...
Relevancy Score: Relevancy Score: 541
Signoret F - - 1986
We report three patients in whom a fractured odontoid process was associated with a fracture of the superior articular process of the second cervical vertebra. Although there were no signs of neurological disorder, damage to the C1-C2 joint in all three patients made fusion necessary. Forced lateral flexion is suggested ...
Relevancy Score: Relevancy Score: 541
Kubo Shigeki - - 2002
A 52-year-old man complaining of headache and nuchal pain was treated initially under a diagnosis of bacterial meningitis. The meningitis resisted antibiotic therapy, and one week later was complicated by a ruptured retropharyngeal abscess, which led to the correct diagnosis of osteomyelitis of the odontoid process of the axis. His ...
Relevancy Score: Relevancy Score: 540
Hott Jonathan S - - 2003
The authors describe a unique retraction device adapted for anterior odontoid screw placement. A rigidly fixed tubular retractor system obviates the need for dissecting the longus colli muscles as well as for excessive retraction of the trachea, esophagus, and recurrent laryngeal nerve. The proper trajectory for screw placement can be ...
Relevancy Score: Relevancy Score: 540
Aydinli Ufuk - - 2008
A number of approaches have been attempted to address the treatment of acute odontoid fractures, spanning from conservative treatment with an external orthotic device to posterior C1-C2 arthrodesis or anterior screw fixation. The current report describes stabilisation of such fractures with a C1 supralaminar hook and a C2 pars interarticularis ...
Relevancy Score: Relevancy Score: 540
Edwards R J - - 2002
Pseudotumour of the craniovertebral junction is an uncommon cause of high cervical myelopathy in the elderly. The anterior transoral approach is the preferred means of accessing these lesions. An "odontoid sparing" transoral approach, in which there is only minimal bone removal, is thought to preserve stability of the craniovertebral junction, ...
Relevancy Score: Relevancy Score: 540
Pointillart V - - 1994
A total of 150 odontoid fractures was treated over a 12-year period, 43 by anterior screw fixation. The rate of pseudarthrosis dropped from 20% to 5% in type II unstable fractures. Thus, anterior screw fixation seems to be safe and efficient, and may be more widely used to treat all ...
Relevancy Score: Relevancy Score: 540
Mosquera Victor - - 2008
We describe a 75-year-old male patient who developed a general syndrome, with a fever of 39 degrees C, weight loss, and cervical pain, during the month following a urological procedure. The presence of positive blood cultures for Enterococcus faecalis, aortic vegetations, and severe aortic regurgitation observed with echocardiogram confirmed the ...
Relevancy Score: Relevancy Score: 539
Weisskopf M - - 2001
Four different radiological diagnostic methods were compared as to their diagnostic relevance in the analysis of odontoid fractures. Thirty-one patients with fresh odontoid fractures were investigated using standard anteroposterior and lateral radiographs, conventional tomography, axial computerized tomography and two-dimensional reconstruction in the sagittal and the coronal planes. As a control, ...
Relevancy Score: Relevancy Score: 539
Lipson S J - - 1977
Eleven patients with documented Morquio's syndrome who had dysplasia of the odontoid process and resulting atlanto-axial instability were reviewed. They were found to be at risk for acute traumatic quadriparesis, chronic myelopathy of a variable and often rapid rate of progression, and sudden death by respiratory arrest. The evidence suggests ...
Relevancy Score: Relevancy Score: 539
Cai Xuan - - 2013
BACKGROUND: Atlanto-odontoid joint arthroplasty is a motion restoring procedure suggested as an alternative to rigid fixation after surgical decompression. The purpose of this study was to evaluate the kinematics and pullout strength of a novel Total Atlanto-odontoid Joint Arthroplasty System using human cadaveric specimens. METHODS: Nondestructive biomechanical tests were performed ...
Relevancy Score: Relevancy Score: 538
Shiohama Tadashi - - 2012
Fractures of the upper cervical spine rarely occur but carry a high rate of mortality and neurological disabilities in children. Although odontoid fractures are commonly caused by high-impact injuries, cerebral palsy children with cervical instability have a risk of developing spinal fractures even from mild trauma. We herein present the ...
Relevancy Score: Relevancy Score: 538
Stulík J - - 2002
PURPOSE OF THE STUDY: Direct osteosynthesis is a method of choice for the treatment of odontoid process fractures. It is based on insertion, from the anterior approach, of one or two screws from the C2 body into the apex of the odontoid across the fracture line. The tensile action of ...
Relevancy Score: Relevancy Score: 537
Pagnez Maria Alice Mainenti - - 2011
The patient was a 79-year-old man with a chief complaint of neck pain after a fall. Three days following the fall, the patient was seen in the emergency department, where computed tomography imaging of the head and radiographs of the cervical spine were completed. The patient was subsequently referred to ...
Relevancy Score: Relevancy Score: 537
Fardon D F - - 1978
Ankylosing hyperostosis of the spine (Forestier's disease) is a distinct clinical entity which must be differentiated from ankylosing spondylitis (Marie-Strumpell's disease) and hypertrophic spondylosis. In the case presented, the distinction was made by clinical, roentgenographic, and postmortem pathologic findings. This case had the unique and previously unreported feature of complication ...
Relevancy Score: Relevancy Score: 537
Schippers N - - 1996
The most common injury to the odontoid process in children under the age of seven years is a fracture through the synchondrosis with or without anterior displacement of the odontoid process, but this is not the only type of fracture of the odontoid process in this age-group. Fractures above and ...
Relevancy Score: Relevancy Score: 536
Lu Bin - - 2009
Resection of the odontoid process and anterior arch of the atlas results in atlantoaxial instability, which if left uncorrected may lead to severe neurological complications. Currently, such atlantoaxial instability is corrected by anterior and/or posterior C1-C2 fusion. However, this results in considerable loss of rotation function of the atlantoaxial complex. ...
Relevancy Score: Relevancy Score: 535
Kakutani Kenichiro K Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunokicho, Chuo-ku, Kobe, 650-0017, Japan. - - 2013
A retro-odontoid pseudotumor is usually a reactive fibrocartilaginous mass associated with atlantoaxial subluxation (AAS). However, a retro-odontoid pseudotumor not associated with AAS, which undergoes spontaneous regression following C1 laminoplasty, has been reported. The purpose of this study was to report surgical outcomes of C1 laminectomy for retro-odontoid pseudotumor without AAS. ...
Relevancy Score: Relevancy Score: 534
Apfelbaum R I - - 2000
OBJECT: The management of odontoid fractures remains controversial. Only direct anterior screw fixation provides immediate stabilization of the spine and may preserve normal C1-2 motion. To determine the indications, optimum timing, and results for direct anterior screw fixation of odontoid fractures, the authors reviewed the surgery-related outcome of patients who ...
Relevancy Score: Relevancy Score: 534
ElSaghir H - - 2000
Controversy exists in the literature regarding the adequacy of one or two screws for direct fixation of the odontoid process. Proponents of the two-screw technique believe that a single screw is not adequate to stabilize the fracture. Conversely, the insertion of two 3.5-mm screws in the medullary cavity of the ...
Relevancy Score: Relevancy Score: 532
Shohat M - - 1989
Our experience with 12 patients with metatropic dysplasia has demonstrated two important and treatable complications: odontoid hypoplasia with subluxation of the first and second cervical vertebrae, and ventriculomegaly. Hypoplasia and lack of ossification of the odontoid process were noted in all cases. Subluxation of these two vertebrae was demonstrated in ...
Relevancy Score: Relevancy Score: 532
Ozer A Fahir - - 2009
BACKGROUND: A different transodontoid screw fixation technique was studied in delayed type II odontoid fractures. This study presents observations on a different transodontoid fixation technique to remove and decrease the amount of sclerotic layers to accelerate the fusion process after the operation. METHODS: Ten cases of chronic type II odontoid ...
Relevancy Score: Relevancy Score: 532
Akanuma J - - 1995
A 77-year-old male was hospitalized with a 6-day history of severe posterior cervical pain and headache. An initial lumbar puncture revealed polymorphonuclear pleocytosis indicating pyogenic meningitis. The blood and throat cultures on admission were positive for Staphylococcus aureus. A combination of ceftriaxone and ABPC, both of which were sensitive to ...
Relevancy Score: Relevancy Score: 532
Nucci R C - - 1995
STUDY DESIGN: Computed tomography scans of the dens were performed on patients who had no atlantoaxial pathology. OBJECTIVES: To determine whether one or two screws is optimal for fracture fixation and whether two screws can always negotiate the intramedullary odontoid cavity. SUMMARY OF BACKGROUND DATA: Fixation of Type II dens ...
Relevancy Score: Relevancy Score: 532
Takami Toshihiro - - 2007
Posterior C1-2 fixation with individual screw placement in C-1 and C-2 was performed in three patients presenting with progressive myelopathy caused by retro-odontoid pseudotumor associated with chronic atlantoaxial subluxation. Postoperatively, all patients demonstrated neurological recovery with gradually diminishing pseudotumor. Posterior C1-2 fixation with the cancellous screw and rod system is ...
Relevancy Score: Relevancy Score: 532
Johnson M J - - 1993
PURPOSE: The open-mouth odontoid view has been a standard component of radiographic cervical spine series regardless of setting or indication. This study examines the prevalence of disease in C-1 to C-2 in an outpatient setting for nontraumatic neck evaluations. MATERIALS AND METHODS: Reports of 1,033 nontraumatic cervical spine series on ...
Relevancy Score: Relevancy Score: 530
MANN G T - - 1960
Relevancy Score: Relevancy Score: 529
Nikitin M N - - 1983
Relevancy Score: Relevancy Score: 529
Torres H - - 1971
Relevancy Score: Relevancy Score: 529
BOEHLER J - - 1965
Relevancy Score: Relevancy Score: 529
Rone W L - - 1972
Relevancy Score: Relevancy Score: 529
Cihanek M - - 2008
Atlantoaxial degenerative articular cysts are described in various situations like rheumatoid arthritis, dialysis, and fractures... and in the C1-C2 subluxations of degenerative origin. The treatment of these retro-odontoid tumors does not consist in excision of the pseudotumor but in the reduction of instability by cervical fusion. The procedures are varied ...
Relevancy Score: Relevancy Score: 529
Fujii E - - 1988
Fifty-eight cases of odontoid fractures treated at Keio University Hospital and affiliate hospitals from 1965 through 1985 were reviewed. Six patients under age 7 years (group A), were characterized as having epiphysiolysis. Among 52 patients over 8 years of age (group B), there were two Type I, 31 Type II ...
Relevancy Score: Relevancy Score: 528
Koebke J - - 1979
Studies on the morphology of the odontoid process by various methods strongly suggest a functional adaption of this bony element. With regard to the inclination of the dens axis and the varying position of its articular facets, a modified trabecular system can be observed. Photoelastic experiments confirm that these modifications ...
Relevancy Score: Relevancy Score: 528
Avila-Guerra Mauricio - - 2013
Cervical spine injuries represent a minority of injury cases in motor vehicles accidents but are a real threat to a patient's life. In the wide range of cervical spine injuries, odontoid (dens) fractures represent the most common findings. These fractures are more usually found in the elderly population due to ...
Relevancy Score: Relevancy Score: 528
Oh Jong Yang - - 2010
Traumatic atlantoaxial rotatory fixation (AARF) with accompanying odontoid and C2 articular facet fracture is a very rare injury, and only one such case has been reported in the medical literature. We present here a case of a traumatic AARF associated with an odontoid and comminuted C2 articular facet fracture, and ...
Relevancy Score: Relevancy Score: 526
Esses S - - 1981
A case of burst fracture of the atlas associated with a type II fracture of the odontoid is presented. In this instance no atlanto-axial instability was detected clinically. Treatment consisted of 1 week of rest in bed followed by 3 months in a collar. Management, though conservative, resulted in full ...
Relevancy Score: Relevancy Score: 525
Lipson S J - - 1977
One case of fracture of the atlas associated with rupture of the transverse ligament and three cases of atlantal fracture with associated fractures of the odontoid process are reported. In such cases, halo immobilization is recommended until the atlantal fracture has healed, followed by atlanto-axial fusion for instability of the ...
Relevancy Score: Relevancy Score: 525
Nolting Laura - - 2010
Acute vertebral osteomyelitis is rare in the pediatric population. Its presentation may be subtle and without constitutional manifestations. We present a case of osteomyelitis of the odontoid process. The disease was not considered in the initial evaluation of an afebrile, nontoxic child who presented for evaluation of neck stiffness. Although ...
Relevancy Score: Relevancy Score: 525
Chikuda Hirotaka - - 2009
STUDY DESIGN: A retrospective review of 10 consecutive patients with a noninflammatory retro-odontoid pseudotumor. OBJECTIVE: To examine the radiographic characteristics in patients with a retro-odontoid pseudotumor and to evaluate the efficacy of posterior fusion. SUMMARY OF BACKGROUND DATA: A retro-odontoid pseudotumor, a reactive fibrocartilaginous mass, is known to develop after ...
Relevancy Score: Relevancy Score: 524
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