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Chutkan NB - - 1997
Fractures of the odontoid process are uncommon injuries. Fracture displacement, compromised blood supply, comminution, and iatrogenic distraction have all been implicated in the reported high rates of nonunion. Plain radiography, polytomography, and computed tomography are all useful in delineating the fracture pattern. Magnetic resonance imaging has been recommended for evaluating ...
Relevancy Score: Relevancy Score: 700
Rubinstein D - - 1996
OBJECTIVE: To determine the computed tomography (CT) appearance of minimally displaced type II odontoid fractures and the optimal protocols to evaluate these fractures by CT. MATERIALS AND METHODS: The CT scans of five patients with minimally displaced type II odontoid fractures and 71 patients without odontoid pathology were reviewed for ...
Relevancy Score: Relevancy Score: 699
Tian Nai-Feng NF Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, - - 2014
Anterior odontoid screw fixation (AOSF) has been one of the most popular treatments for odontoid fractures. However, the true efficacy of AOSF remains unclear. In this study, we aimed to provide the pooled rates of non-union, reoperation, infection, and approach related complications after AOSF for odontoid fractures. We searched studies ...
Relevancy Score: Relevancy Score: 698
Müller E J - - 2000
The results of anterior screw fixation of odontoid fractures in 28 patients are presented. There were 27 type II- and 1 type III-injuries. Non-union with persistent instability had to be notified in one patient (3.6 %), secondary posterior C1/2 fusion had to be performed. Incorrect positioning of the screws in ...
Relevancy Score: Relevancy Score: 696
Orief Tamer - - 2011
The preferred treatment of a type II odontoid fracture is anterior odontoid screw fixation to preserve the cervical spine range of movement. This case report describes an unusual complication of guidewire breakage during anterior odontoid cannulated screw fixation for a 52-year-old patient who presented with a type II odontoid fracture ...
Relevancy Score: Relevancy Score: 696
Ben-Galim Peleg - - 2008
BACKGROUND CONTEXT: Irreducible anteriorly displaced odontoid fractures are usually treated with posterior atlantoaxial fusion. PURPOSE: To present an alternative for fracture reduction and anterior stabilization for displaced odontoid fractures. STUDY DESIGN: A technique for reduction of odontoid fractures is reported. PATIENT SAMPLE: Case study of a single patient with an ...
Relevancy Score: Relevancy Score: 696
Montesano P X - - 1991
While odontoid fractures are common injuries, disagreement exists regarding treatment. Some authors claim a high rate of pseudoarthrosis and have therefore recommended early posterior fixation and fusion. This, however, results in decreased cervical rotation. Therefore, it has been recommended that a more direct approach to the fracture be taken. Results ...
Relevancy Score: Relevancy Score: 696
Harrop J S - - 2000
OBJECT: Type II odontoid fractures are the most common trauma-related dens fracture. Although Type III odontoid fractures have a high union rate when external immobilization is applied, Type II fractures are associated with high rates of nonunion, particularly in elderly patients and those with posteriorly displaced fractures or fractures displaced ...
Relevancy Score: Relevancy Score: 693
Huybregts Jeroen Gj - - 2014
Fractures of the odontoid process of the axis are the most common fractures of the geriatric cervical spine. As the population ages, their incidence is expected to increase progressively, as is the number of very old patients (>80 years) with an odontoid fracture. No consensus exists on the optimal treatment ...
Relevancy Score: Relevancy Score: 693
Roi T - - 1988
An odontoid bone was detected in an adult patient after injury to neck, with secondary appearance of disorders related to C1-C2 instability that disappeared after posterior C1-C2 arthrodesis. The odontoid bone is a rare anomaly of debatable origin. Current pathogenicity theories are discussed.
Relevancy Score: Relevancy Score: 692
Andersen B J - - 1991
Aneurysmal bone cysts (ABCs) are relatively uncommon, benign lesions. Fully 50% occur in long bones and 20% in the vertebral column, mostly in patients under 20 years of age. We report a case of an ABC in the odontoid process of a 74-year-old who sought treatment for pain and myelopathy. ...
Relevancy Score: Relevancy Score: 692
Vining D J - - 1992
A case is presented that illustrates the use of computerized tomography for the evaluation of an odontoid fracture in a child. Such a "fracture" may actually represent a "synchondrotic slip" of the odontoid and C-2 vertebral body between the neural arches of C-2. Treatment should almost always be conservative. Complete ...
Relevancy Score: Relevancy Score: 692
Savader S J - - 1985
A type 2 odontoid fracture in a nine-month-old infant is presented. To the best of our knowledge, this case has the youngest reported patient with this type of injury having occurred by a mechanism other than direct trauma at birth. The purpose of this communication is to review odontoid fractures ...
Relevancy Score: Relevancy Score: 692
Song Kyung-Jin - - 2012
An odontoid fracture leading to Brown-Sequard syndrome (BSS) is an uncommon condition with only seven cases reported to date. To our knowledge, there are no reports of occurrence in paediatric patients. We report a paediatric odontoid fracture leading to Brown-Sequard syndrome (BSS) with satisfactory recovery following surgical treatment. Odontoid fractures ...
Relevancy Score: Relevancy Score: 691
Toyama Y - - 1992
Six cases of spontaneous fracture of the odontoid process in rheumatoid arthritis are presented. Fifty-one patients with atlantoaxial subluxation in rheumatoid arthritis underwent surgery between 1981 and 1990. This included six patients (in 10%) who had subluxation accompanied by fracture of the odontoid without apparent trauma. The mean patient age ...
Relevancy Score: Relevancy Score: 690
Yanagawa Youichi - - 2005
A 17-year-old man presented with sleeping tendency, tenderness of the back of the neck, and left upper monoplegia after a motorcycle accident. Three-dimensional computed tomography on the 2nd hospital day clearly revealed a type I odontoid fracture. His injuries were treated conservatively and he was discharged on the 60th hospital ...
Relevancy Score: Relevancy Score: 690
Julien T D - - 2000
OBJECT: The management of odontoid fractures remains controversial. Evidence-based methodology was used to review the published data on odontoid fracture management to determine the state of the current practices reported in the literature. METHODS: The Medline literature (1966-1999) was searched using the keywords "odontoid," "odontoid fracture," and "cervical fracture" and ...
Relevancy Score: Relevancy Score: 688
Duransoy Yusuf Kurtulus YK Celal Bayar University, Faculty of Medicine, Department of Neurosurgery, Manisa, - - 2013
We describe a modified form of traditional open surgery with a new guide tube. This guide tube permits anterior screwing of odontoid in a shorter time with a more simple technique as compared to traditional open surgery, endoscopic and percutaneous surgeries. Our series includes 6 patients who were operated for ...
Relevancy Score: Relevancy Score: 684
Cokluk Cengiz - - 2006
The odontoid process of C2 projects upward from the superior roof of the body of C2. There is a confusion about the inferior border of the odontoid. The aims of this clinical study were to describe the inferior border of the odontoid process based on the remnant of dentocentral synchondrosis ...
Relevancy Score: Relevancy Score: 681
Zapletal J - - 1995
Out of 620 consecutive examinations of the atlanto-odontoid joint in patients referred for computed tomography (CT) of the brain or paranasal sinuses, gas collection within the atlanto-odontoid joint was observed in 12 (1.9%). Degenerative abnormalities at the atlanto-odontoid joint were significantly more frequent in patients with a gas-induced vacuum phenomenon ...
Relevancy Score: Relevancy Score: 679
Rosenberg F - - 1978
The authors report 9 cases of partial or total lysis of the odontoid peg in rheumatoid arthritis. Retrospective study of 100 cases of rheumatoid arthritis and the data from the literature demonstrate the rarity of these lesions, the last stage of the odontoid erosions which are much commoner. The therapeutic ...
Relevancy Score: Relevancy Score: 677
Jenkins J D - - 1998
OBJECT: The optimal treatment of Type II odontoid fractures is controversial. Various therapies have been used, including nonrigid immobilization, halo orthosis, posterior atlantoaxial arthrodesis, and odontoid screw fixation. Of these, odontoid screw fixation is the only treatment modality that provides immediate stabilization and preserves normal motion at C1-2. It has ...
Relevancy Score: Relevancy Score: 677
Tojo Shinjiro - - 2013
STUDY DESIGN.: A retrospective, consecutive case series. OBJECTIVE.: To analyze the relationship between retro-odontoid soft-tissue thickness and patients' age, sex, and degenerative changes of cervical spine and to investigate the effect these factors have on retro-odontoid soft-tissue thickness. SUMMARY OF BACKGROUND DATA.: Thickening of the soft tissue posterior to the ...
Relevancy Score: Relevancy Score: 676
Tun Kagan - - 2009
Anterior odontoid screw fixation is a safe and effective method for treatment of odontoid fractures. The screw treads should fit into the odontoid medulla, should pass the fracture line, and should pull fractured odontoid tip against body of axis in order to achieve optimum screw placement and treatment. This study ...
Relevancy Score: Relevancy Score: 674
Lee Sai-Cheung - - 2004
The use of anterior odontoid screw fixation has grown in popularity for the management of acute, unstable Anderson and d'Alonzo Type II and rostral Type III odontoid fractures. This study critically reviews our clinical experience of 48 patients with single odontoid screw fixation for the treatment of Type II and ...
Relevancy Score: Relevancy Score: 674
Kokkino A J - - 1996
Fifteen percent of cervical spine fractures involve the odontoid process. Most odontoid fractures can be classified as Types I through III according to the scheme developed by Anderson and D'Alonzo. We report a case of a vertically oriented fracture through the odontoid process that does not fit into any of ...
Relevancy Score: Relevancy Score: 673
Morandi X - - 1999
BACKGROUND: Anterior screw fixation is the best treatment for odontoid fractures when the fracture line is horizontal or oblique downward and backward, as it preserves atlantoaxial mobility, especially axial rotation. Some details regarding patient positioning and operative technique need to be stressed to obtain the best results and avoid complications. ...
Relevancy Score: Relevancy Score: 672
Govender S - - 2000
We treated 183 patients with fractures of the odontoid process (109 type II, 74 type III) non-operatively. Union was achieved in 59 (54%) with type-II fractures. All type-III fractures united, but in 16 patients union was delayed. There was no correlation between union and the clinical or radiological outcome of ...
Relevancy Score: Relevancy Score: 669
Keogh S - - 1992
An epidural abscess secondary to osteomyelitis of the odontoid peg produced a sudden left-sided weakness. Appropriate antibiotics, transoral evacuation of the pus and subsequent posterior atlanto-axial fusion were associated with a full recovery.
Relevancy Score: Relevancy Score: 668
Harrop J S - - 2000
Odontoid fractures can be successfully treated with anterior screw fixation. Odontoid fractures commonly occur in older patients who may have significant osteopenia. The authors examined the use of a bone substitute to overcome limitations encountered during a procedure in which anterior odontoid screw fixation is performed. Two elderly patients with ...
Relevancy Score: Relevancy Score: 665
Swischuk L E - - 2000
OBJECTIVES: Questionnaires (984) were submitted to pediatric radiologists to determine how often odontoid fractures were missed on lateral views and detected on open-mouth odontoid views in children under 5 years. Other questions relating to imaging protocols of the odontoid also were included, and there were 432 respondents. RESULTS: Of these, ...
Relevancy Score: Relevancy Score: 665
Westermeyer Robert R - - 2003
Odontoid dysplasias are considered rare but are becoming increasingly recognized. Patients may have no symptoms, localized neck pain, or neurologic symptoms. Because patients with odontoid anomalies have the potential for craniovertebral instability, recognition of the entity is essential. A discussion of the axis, its development and anomalies follows.
Relevancy Score: Relevancy Score: 664
Jun Byung-Yoon - - 2002
STUDY DESIGN: A rare case of retro-odontoid pseudotumor combined with diffuse idiopathic skeletal hyperostosis is presented. OBJECTIVE: To discuss the pathomechanism of retro-odontoid pseudotumor in diffuse idiopathic skeletal hyperostosis. SUMMARY OF BACKGROUND DATA: Reports describing craniovertebral manifestations of diffuse idiopathic skeletal hyperostosis are quite rare. Only two cases of an ...
Relevancy Score: Relevancy Score: 663
Ryan M D - - 1982
Twenty-three adults with fractures of the odontoid process are reviewed. Te possible reasons for the high rate of non-union in reported series are considered: these include the type of fracture, its displacement, the presence of a gap at the fracture site, imperfect reduction and inadequate immobilisation. Type 2 fractures (at ...
Relevancy Score: Relevancy Score: 661
Scheyerer Max J - - 2013
Odontoid fractures account for approximately 20% of all fractures of the cervical spine. They represent the most common cervical spine injury for patients older than 70 years, the majority being type II fractures (65-74%), which are considered to be relatively unstable. The management of these fractures is controversial. Possible treatment ...
Relevancy Score: Relevancy Score: 661
Vasudevan K K Department of Neurosurgery, Emory University School of Medicine, United - - 2014
Type II odontoid fractures are the most common spinal fracture in the elderly population and may be managed with halo immobilization, posterior fusion, and anterior odontoid screw fixation. Anterior odontoid screw fixation has several advantages over posterior fusion, including: reduced surgical time, decreased post-operative pain, preserved range of motion, earlier ...
Relevancy Score: Relevancy Score: 660
McLain R F - - 2001
STUDY DESIGN: Description of surgical technique with case correlation. OBJECTIVE: This article presents an alternative approach to anterior odontoid screw salvage in a patient with established nonunion. SUMMARY OF BACKGROUND DATA: Type II odontoid fractures are often treated surgically because of their risk of nonunion. Anterior odontoid screw fixation offers ...
Relevancy Score: Relevancy Score: 660
Puttlitz C M - - 2000
STUDY DESIGN: A finite element investigation to determine the causal mechanisms that lead to odontoid fracture. OBJECTIVES: To elucidate which loading scenarios, including rotational moments, compression-tension, and lateral and anteroposterior shear, can result in Type I, Type II, and Type III odontoid failures. SUMMARY OF BACKGROUND DATA: There is considerable ...
Relevancy Score: Relevancy Score: 660
Elliott S - - 1988
An analysis of the cervical spine of 508 normal children aged between 3 and 18.9 years provided data for the normal development of the odontoid process and its relationship to the anterior arch of the atlas. In normal children under the age of 9 years, the tip of the odontoid ...
Relevancy Score: Relevancy Score: 659
Young W F - - 1999
A case of isolated pyogenic osteomyelitis of the odontoid process is reported. Diagnosis was made using magnetic resonance imaging. Aggressive treatment, including transoral drainage of the abscess, antibiotics and cervical immobilization, resulted in a successful outcome. A review of the world's literature revealed only 15 previous reports of this rare ...
Relevancy Score: Relevancy Score: 659
Torreggiani W C - - 2001
Fractures of the thoracic and lumber spine are well recognized following an epileptic seizure. Fractures of the cervical spine are not. The rare occurrence of a displaced odontoid fracture type 2, secondary to a grand mal seizure is presented. To our knowledge, this association has not been described previously in ...
Relevancy Score: Relevancy Score: 659
Puccioni M J - - 1997
Vertebral hemangioma is a common and usually benign lesion encountered on routine radiographic studies. We report the unusual case of a woman who sustained a displaced fracture of a hemangiomatous odontoid after minimal trauma. Good healing was accomplished with external halo bracing alone.
Relevancy Score: Relevancy Score: 659
Koç R K - - 2001
A case of type IIA odontoid fracture with posterolateral dislocation accompanied by spinal cord injury is presented. Cervical traction was employed but reduction could not be achieved with up to 8 kg of traction. The patient was treated with intraoperative reduction and C1-2 posterior transarticular screw fixation with supplemental bone-wire ...
Relevancy Score: Relevancy Score: 659
Brooker D S - - 1988
This is a case of a 58-year-old woman who presented with progressive stridor due to immobile vocal cords. This was found to be due to cervical cord compression by an upwardly subluxed odontoid peg. Despite surgical intervention the outcome was fatal.
Relevancy Score: Relevancy Score: 659
Platzer Patrick - - 2010
Odontoid plate fixation without C1-C2 arthrodesis appears to be a practicable option for the management of odontoid fractures that are not amenable for conventional screw fixation. The purpose of this study was to measure the mechanical stability of odontoid plate fixation using a specially designed plate construct, and to compare ...
Relevancy Score: Relevancy Score: 657
Grauer Jonathan N - - 2005
BACKGROUND CONTEXT: The classification scheme of odontoid fractures described by Anderson and D'Alonzo is the one most commonly used. However, uncertainty exists in the distinction between Type II and "shallow" Type III fractures. Moreover, fractures at the base of the odontoid (Anderson and D'Alonzo Type II) include a spectrum of ...
Relevancy Score: Relevancy Score: 654
Alfieri A - - 2001
BACKGROUND: The management of odontoid fractures is still controversial. The main current trends of treatment are conservative management with HALO immobilization, posterior surgical fixation or anterior surgical fixation. The authors report a consecutive series of 17 cases of patients with acute Type II odontoid fracture treated between November 1994 and ...
Relevancy Score: Relevancy Score: 654
Shilpakar S - - 2000
In this article the authors describe the management of Type II odontoid fractures with special attention to operative technique and avoidance of complication. Anterior odontoid screw fixation is a procedure the authors have performed over the last 8 years in cases with acute Type II and rostral Type III odontoid ...
Relevancy Score: Relevancy Score: 654
Peicha G - - 1999
We present the case of a 44-year-old female patient, who sustained an odontoid fracture after a minor trauma (uncomplicated fall). The radiologic evaluation revealed a skeletal tumor of the second cervical vertebra together with a fracture line at the base of the odontoid process of the axis. The patient underwent ...
Relevancy Score: Relevancy Score: 653
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