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Roberts A - - 1973
Relevancy Score: Relevancy Score: 589
Seljeskog E L - - 1971
Relevancy Score: Relevancy Score: 589
Minne J - - 1970
Relevancy Score: Relevancy Score: 589
Autricque A - - 1987
The authors report the use of direct osteosynthesis for odontoid fractures by screw. The approach is a transcervical approach. Its advantages and inconvenients are reported. Its indications are discussed.
Relevancy Score: Relevancy Score: 588
Thomas S L - - 1985
There appears to be an increased incidence of hypoplasia of the odontoid in Hurler's syndrome. As this predisposes to atlanto-axial subluxation, it should be sought in this mucopolysaccharidosis, as well as in Morquio's syndrome.
Relevancy Score: Relevancy Score: 588
Dirheimer Y - - 1983
Twenty-seven patients with definite or probable CPPS have been investigated with systematic frontal and lateral tomograms of the cervicooccipital region. In 12 cases there were calcifications of the syndesmo-odontoid region. These calcifications are of two different types: linear calcifications (5 cases) and mottled calcifications (7 cases). The anatomic location of ...
Relevancy Score: Relevancy Score: 587
Blondel B - - 2013
We report the case of a patient diagnosed with a pathological fracture of the odontoid dens related to a renal carcinoma metastasis and treated by an original technique. In order to achieve correct stabilization of the fracture and to preserve rotational neck mobility, an anterior approach combining an odontoid screw ...
Relevancy Score: Relevancy Score: 587
Castro-Castro Julián - - 2013
Retro-odontoid pseudotumors are lesions caused by inflammatory granulation or reactive soft tissue hypertrophy from chronic atlantoaxial subluxation. However, one-third of the cases reported in the medical literature did not show atlantoaxial instability clearly. The authors present the case of a 76-year-old man previously diagnosed with diffuse idiopathic skeletal hyperostosis who ...
Relevancy Score: Relevancy Score: 587
Davis D - - 1977
The embryologic origins of congenital abnormalities of the odontoid process are reviewed. Four cases of odontoid dysgenesis in childhood are presented. All of our cases were associated with a head injury, which subsequently led to the diagnosis. Pain was the most common presenting complaint in our patients. Decreased cervical mobility ...
Relevancy Score: Relevancy Score: 586
Li Fangcai - - 2008
STUDY DESIGN: A retrospective study. OBJECTIVE: To investigate the treatment of odontoid fractures combined with lower cervical spinal injury. SUMMARY OF BACKGROUND DATA: Odontoid fractures combined with a lower cervical spinal injury are rarely reported in the literature and their incidence and characteristics are not well known. METHODS: Seventy-six patients ...
Relevancy Score: Relevancy Score: 585
Jeanneret B - - 1992
Odontoid fractures, especially unstable type II fractures have a poor prognosis in respect to healing. Therefore, operative stabilization (posterior fusion C1/2 or anterior screw fixation) has been suggested for the treatment of unstable type II and for some unstable type III fractures. Compared to posterior fusion C1/2, anterior screw fixation ...
Relevancy Score: Relevancy Score: 585
Lee Sun-Ho - - 2006
BACKGROUND: Anterior screw fixation provides the best anatomical and functional results for odontoid process fracture (type II and "shallow" type III) with intact transverse ligament. The purpose of this study is to evaluate the clinical results of the 4.5-mm-diameter cannulated Herbert screw in the anterior odontoid fixation. METHODS: From May ...
Relevancy Score: Relevancy Score: 585
Wang Ting - - 2011
A case of type II odontoid fracture with irreducible posterior dislocation is presented. Cervical traction was employed but reduction could not be achieved with up to 15 kg of traction. The patient was treated with intraoperative transoral open reduction combined with anterior-posterior fixation. Rigid fixation and bone union were obtained without ...
Relevancy Score: Relevancy Score: 585
Koizumi Hiroyuki - - 2008
A 73-year-old woman suffered from neck pain, progressive m tor weakness and sensory disturbance in all extremities. Neuroradiological studies revealed a retro-odontoid mass with posterior compression of the upper cervical spinal cord. Decompression of the mass was performed via a postero-lateral transdural approach, and the patient exhibited marked improvement of ...
Relevancy Score: Relevancy Score: 585
Morgan Jeremy P - - 2013
Anterior screw fixation of the odontoid is contraindicated in remote type II fractures. The alternative surgical treatment consists of a posterior C1 to C2 or an occiput to C3 fusion, which is met with much resistance by patients as this option limits head motion, especially rotational movement. Furthermore, elderly patients ...
Relevancy Score: Relevancy Score: 584
Spetzler R F - - 1979
Four patients underwent transoral resection of the odontoid with utilization of microsurgical technique and spinal cord monitoring of somatosensory cortical evoked responses. All patients improved following surgery, and no operative morbidity or mortality was encountered. Spinal cord monitoring enhances the safety of the procedure and, reapplied at a later date, ...
Relevancy Score: Relevancy Score: 584
Shimada Hirofumi - - 2011
OBJECTIVE: To reveal the factors that determine the natural course of subluxation of occipital-cervical lesions in rheumatoid arthritis (RA). The atlanto-axial region is one of the most common locations for lesions in RA. Some cases progress from reducible atlanto-axial subluxation (AAS) to irreducible vertical migration, while others continue to exhibit ...
Relevancy Score: Relevancy Score: 583
Aldrian Silke - - 2012
: Type II odontoid fractures with additional chip fragments are rare in clinical practice, accounting for < 10% of all odontoid fractures. Hadley et al were the first to describe these fractures as an individual subtype (IIA). : To analyze the outcome of patients after surgical or nonoperative treatment of ...
Relevancy Score: Relevancy Score: 583
Perdikakis Evangelos E Department of Radiology, 412 General Military Hospital-212 Mobile Army Surgical Hospital, Terma Lefkou Pyrgou, 67100, Xanthi, Greece, - - 2013
Several developmental anomalies have been described with respect to the odontoid process. The purpose of the study was to describe the MR appearance of the odontoid process and to calculate the prevalence of its morphological variants. We retrospectively reviewed 133 patients (85 males and 48 females, age range of 19-81 years, ...
Relevancy Score: Relevancy Score: 583
Miyakoshi Naohisa - - 2003
We describe two cases of combined fractures of the odontoid process and upper thoracic spine that have not been previously reported. The first patient, a 21-year-old man, sustained an odontoid process fracture with posterior displacement and a fracture-dislocation injury at T4/5 in a motorcycle accident. The second patient, a 66-year-old ...
Relevancy Score: Relevancy Score: 579
Kotil Kadır K Department of Neurosurgery, Istanbul Educational and Research Hospital, Istanbul, - - 2011
Anterior odontoid screw fixation or posterior C1-2 fusion techniques are routinely used in the treatment of Type II odontoid fractures, but these techniques may be inadequate in some types of odontoid fractures. In this new technique (Kotil technique), through a posterior bilateral approach, transarticular screw fixation was performed at the ...
Relevancy Score: Relevancy Score: 578
Harrop James S - - 2010
Clinically based systematic review. To define optimal clinical care for elderly patients with Type II and III odontoid fractures using a systematic review with expert opinion. Numerous manuscripts have been written about treatment strategies of odontoid fractures in the elderly. However, these articles are of low quality and optimal treatment ...
Relevancy Score: Relevancy Score: 578
Koech Florentius - - 2008
STUDY DESIGN: Retrospective case series of elderly patients with Type II odontoid fractures, with prospective functional follow-up. OBJECTIVE: We aimed to investigate the functional outcomes after nonoperative management of Type II odontoid fractures in elderly patients at a Level 1 trauma center. SUMMARY OF BACKGROUND DATA: Controversy exists regarding the ...
Relevancy Score: Relevancy Score: 578
Sayama Christina M - - 2008
STUDY DESIGN: Retrospective radiographic review. OBJECTIVE: The purpose of this study was to reassess the utility of magnetic resonance imaging (MRI) in the assessment of type II and shallow type III odontoid fractures. SUMMARY OF BACKGROUND DATA: The authors of previous studies have reported a 10% incidence of transverse atlantal ...
Relevancy Score: Relevancy Score: 578
Malca S - - 1991
The authors describe a case of direct screw fixation of the odontoid process via an anterolateral retropharyngeal subhyoid pre-sternomastoid approach and discuss the indications for this operation. In this particular case, immobilization by a cervical collar or a halo vest was not chosen because of its constraining character and the ...
Relevancy Score: Relevancy Score: 578
Gambacorta D - - 1987
Nine cases of traumatic odontoid fractures had, as a primary treatment, a posterior surgical fixation (C1 + C2 + C3) by means of acrylate, without waiting for the unpredictable results of external systems of immobilisation. No immediate or late (follow-up: six months to seven yrs) neurological complications occurred. Solid union ...
Relevancy Score: Relevancy Score: 577
Hoenig J F - - 1991
A case of a 19-year-old female with atlanto-axial fusion and dysplasia of odontoid peg in a cleft lip and palate patient is described. Schematic drawings from radiographs were taken to compare six earlier reported cases of anterior atlas arch fusions with epistropheus including dysplasia or aplasia of odontoid peg from ...
Relevancy Score: Relevancy Score: 577
Konrad Carsten - - 2004
We report on a 57-year-old woman with frequent and powerful retrocollis. The involuntary movements combined with rheumatoid arthritis and osteoporosis led to a fracture of the axial odontoid process. Neurologists with a focus on movement disorders should screen for diseases putting the patient at risk for spinal lesions and consider ...
Relevancy Score: Relevancy Score: 576
Kinkpé C V A - - 2009
The authors report a case of apophysial fracture of the odontoid process in association with paresis of the upper extremities in a 5-year-old child. The fracture was treated by gradual guided self-reduction without anaesthesia, followed by a Minerva jacket cast immobilisation. Reduction was anatomical, and the neurological problems regressed within ...
Relevancy Score: Relevancy Score: 576
Harty J A JA Department of Orthopaedics, St Vincent's University Hospital, Dublin, - - 2005
This study aimed to evaluate the necessity for further radiological investigation in patients with suspected traumatic rotatory subluxation of the atlanto-axial complex on plain radiography following acute cervical trauma and outline guidelines for assessment of patients with atlanto-axial asymmetry on plain radiography. A retrospective review of all patients who had ...
Relevancy Score: Relevancy Score: 575
Roy-Camille R - - 1983
A review of 92 recent fractures of the odontoid process suggests that they can be divided into two groups: stable fractures requiring no more than orthopedic treatment, and unstable fractures requiring surgery. Basing themselves on four main prognostic factors (direction and level of the fracture, distance between the fragments and ...
Relevancy Score: Relevancy Score: 575
Moreno P - - 1982
Reporting a clinical observation, the authors emphasize upon the extreme scarceness of this variety of so called "congenital" pseudarthrosis of the odontoid process. The congenital origin, due to a lack of fusion, or the acquired one by avascular necrosis following a trauma is explained. The diagnosis may be clinical, consisting ...
Relevancy Score: Relevancy Score: 575
Rajasekaran S - - 2010
Relevancy Score: Relevancy Score: 573
Zijlstra W P - - 2008
A 65-year-old woman who habitually made flexion-extension movements with her cervical vertebral column (so-called 'headbanging') was seen with complaints of the neck. X-rays of the neck revealed an odontoid fracture. Bone densitometry revealed lowered bone mineral density (osteopenia). The diagnosis was odontoid fracture due to headbanging, in the presence of ...
Relevancy Score: Relevancy Score: 573
Graziano G - - 1994
Two cases of complete atlanto-axial dislocation with associated Type II odontoid fracture are reported. In one case, the instability associated with this injury was treated with primary odontoid fixation. In the second case, the patient had full cardiac arrest associated with this injury. Due to the extreme instability present with ...
Relevancy Score: Relevancy Score: 573
Stompro B E - - 1989
Fibrous dysplasia of the cervical spine is rare. No prior reports have discussed odontoid fractures in the setting of fibrous dysplasia. We describe a 26-year-old man who suffered a traumatic odontoid fracture in an area of preexisting fibrous dysplasia. The patient was treated conservatively in a sterno-occipito-mandibular immobilizer brace with ...
Relevancy Score: Relevancy Score: 573
Shalayev Stan G - - 2004
The authors present an in-depth retrospective analysis of retractor systems for anterior odontoid screw fixation. They discuss various modifications and innovations of such systems and describe their own tubular retractor system, in which a beveled end conformal to the ventral surface of the vertebral column at the C2-3 level is ...
Relevancy Score: Relevancy Score: 573
Fagin Alice M - - 2010
BACKGROUND:: Treatment of odontoid fractures remains controversial. There are conflicting data in the literature with regard to timing of operative fixation (OP), as well as whether OP should be performed. Within our own institution, treatment is variable depending largely on surgeon preference. This study was undertaken in an attempt to ...
Relevancy Score: Relevancy Score: 572
Mori Y - - 1998
BACKGROUND: The majority of benign spinal osteoblastomas arise from the posterior elements of the spine; there have been no published reports of the tumor in the odontoid process of the axis. Accurate preoperative localization of the tumor is important for planning minimally invasive surgery on such benign tumors. However, the ...
Relevancy Score: Relevancy Score: 571
Kuntz C C - - 2000
The optimum treatment of Type II odontoid fractures in the geriatric population remains controversial. Coexisting medical conditions encountered in the elderly patient often increase operative risk and make cervical immobilization difficult to tolerate. Previous studies have shown increased morbidity and mortality and decreased fusion rates for Type II odontoid fractures ...
Relevancy Score: Relevancy Score: 571
Przybylski G J - - 2000
OBJECT: Acute respiratory failure has been observed in patients after external immobilization for displaced odontoid fractures. The authors studied the frequency of respiratory deterioration in the acute management of displaced Type II odontoid fractures to identify patients at risk for respiratory failure. METHODS: The authors conducted a retrospective review of ...
Relevancy Score: Relevancy Score: 571
Ogata Tadanori - - 2009
STUDY DESIGN: A case report and review of previous literature. OBJECTIVES: To describe the diagnosis and successful treatment of an intraspinal retro-odontoid cyst associated with an os odontoideum. SUMMARY OF BACKGROUND DATA: Retro-odontoid cysts associated with atlantoaxial instability are extremely rare. Direct excision of the cysts has commonly been performed ...
Relevancy Score: Relevancy Score: 571
Miller J - - 1984
For the past 20 years, the transoral approach to the upper cervical spine has been utilized for odontoid fractures, the removal of an abnormal odontoid process, decompression of basilar impression, and biopsy or resection of nasopharyngeal or metastatic tumors. The effectiveness and safety of this procedure is well documented. Use ...
Relevancy Score: Relevancy Score: 571
Tokunaga Shigeyuki - - 2011
ABSTRACT: Study Design: A retrospective case study.Objective: To confirm the remodeling potential of the kyphotic malunited odontoid fracture in the pediatric spineSummary of Background Data: Non-surgical reduction and immobilization is the gold standard for the odontoid fracture in infancy. However, the reduction occasionally results in incomplete repositioning of the odontoid ...
Relevancy Score: Relevancy Score: 570
Sundaresan N - - 1981
A series of 18 patients with odontoid fractures due to metastatic cancer were treated at Memorial Sloan-Kettering Cancer Center between 1974--1980. The primary source of cancer was breast (12 cases), lung (two cases), nasopharynx (one case), multiple myeloma (one case), colon (one case), and rhabdomyosarcoma (one case). The clinical features ...
Relevancy Score: Relevancy Score: 567
Tanaka Shingo - - 2010
A retro-odontoid pseudotumor (ROP) is commonly associated with atlantoaxial subluxation (AAS). Here, we report a patient with ROP but without AAS. The patient was a 72-year-old man who did not have a history of rheumatoid arthritis or trauma to the head and neck. The patient was admitted to our hospital ...
Relevancy Score: Relevancy Score: 567
Keskin Fatih F Necmettin Erbakan University, Meram School of Medicine, Department of Neurosurgery, Konya, - - 2014
In this study, 31 patients with a diagnosis of Type II odontoid fractures were reported. All patients were treated with anterior transodontoid screw fixation and clinical outcomes were reported. In this study, the retrospective clinical analysis of 31 patients with traumatic type II odontoid fractures who were treated through anterior ...
Relevancy Score: Relevancy Score: 567
Schatzker J - - 1975
A clinical study of fractures of the odontoid process showed a 62 per cent failure on union. Of many features studied, only displacement and its direction had a definite bearing on non-union of the fracture. Blood supply was considered as a possible etiological factor. The blood supply of the human ...
Relevancy Score: Relevancy Score: 567
Kakitsubata Y - - 2000
PURPOSE: To investigate the histopathologic anatomy of calcium pyrophosphate dihydrate (CPPD) crystal deposition in and around the atlantoaxial joint and the association between CPPD crystal deposition and subchondral cysts, erosions, and fracture involving the odontoid process of the axis. MATERIALS AND METHODS: One adult cadaver demonstrating calcification in the retro-odontoid ...
Relevancy Score: Relevancy Score: 566
Panczykowski David - - 2010
In this report, the authors describe the case of a 3-year-old child with a traumatic Type III odontoid fracture. To their knowledge, this is the first reported case of a true Type III odontoid fracture with atlantoaxial rotatory subluxation in a child. The patient presented with pain and had resisted ...
Relevancy Score: Relevancy Score: 566
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