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Complications of Posterior Fusion for Atlantoaxial Instability in Children With Down Syndrome

Takeoka Y, Kakutani K, Miyamoto H, Suzuki T, Yurube T, Komoto I, Ryu M, Satsuma S, Uno K

Objective: To clarify the complications of posterior fusion for atlantoaxial instability (AAI) in children with Down syndrome and to discuss the significance of surgical intervention. Methods: Twenty pediatric patients with Down...
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Nonrheumatoid Retro-Odontoid Pseudotumors: Characteristics, Surgical Outcomes, and Time-Dependent Regression After Posterior Fixation

Niwa R, Takai K, Taniguchi M

Objective: Although a retro-odontoid pseudotumor associated with rheumatoid arthritis is a well-known clinical entity, little is known about retro-odontoid pseudotumors not associated with rheumatoid arthritis due to their rarity. Methods: Between...
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Novel Technique for C1–2 Interlaminar Arthrodesis Utilizing a Modified Sonntag Loop-Suture Graft With Posterior C1–2 Fixation

Koffie RM, Larsen AMG, Grannan BL, Hadzipasic M, Yanamadala V, Beaver LV, Shankar GM, Shin JH

Objective: Conventional techniques for atlantoaxial fixation and fusion typically pass cables or wires underneath C1 lamina to secure the bone graft between the posterior elements of C1–2, which leads to...
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Anatomic Considerations of Anterior Transarticular Screw Fixation for Atlantoaxial Instability

Sonone S, Dahapute A, Waghchoure C, Marathe N, Keny SA, Singh K, Gala R

STUDY DESIGN: Cadaveric, observational study. PURPOSE: Atlantoaxial instability (AAI) is characterized by excessive movement at the C1–C2 junction between the atlas and axis. An anterior surgical approach to expose the upper...
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Influence of Atlantoaxial Fusion on Sagittal Alignment of the Occipitocervical and Subaxial spines in Os Odontoideum with Atlantoaxial Instability

Choi BW, Park JB, Kang JW, Kim DG, Chang H

STUDY DESIGN: Retrospective case analysis. PURPOSE: We hypothesized that larger the C1–C2 fusion angle, greater the severity of the sagittal malalignment of C0–C1 and C2–C7. OVERVIEW OF LITERATURE: In our experience, instances...
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Independent Correlation of the C1–2 Cobb Angle With Patient-Reported Outcomes After Correcting Chronic Atlantoaxial Instability

Pan Z, Xi Y, Huang W, Kim KN, Yi S, Shin DA, Huang K, Chen Y, Huang Z, He D, Ha Y

OBJECTIVE: To investigate three-planar radiographic results and patient-reported outcomes (PROs) after correcting chronic atlantoaxial instability (AAI) by translaminar screw (TLS) and pedicle screw (PS) fixation, and to explore the potential...
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A Review of a New Clinical Entity of ‘Central Atlantoaxial Instability’: Expanding Horizons of Craniovertebral Junction Surgery

Goel A

The author discusses the novel form of central or axial atlantoaxial instability and analyses its clinical significance. High degree of clinical and radiological understanding of the region is mandatory to...
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Posterior Sublaminar Wiring and/or Transarticular Screw Fixation for Reducible Atlantoaxial Instability Secondary to Symptomatic Os Odontoideum: A Neglected Technique?

Chang H, Park JB, Choi BW, Kang JW, Chun YS

STUDY DESIGN: Retrospective case analysis. PURPOSE: We retrospectively evaluated the clinical and radiological outcomes of posterior sublaminar wiring (PSLW) and/or transarticular screw fixation (TASF) for reducible atlantoaxial instability (AAI) secondary to...
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Comparison of Cervical Alignment and Clinical Outcomes in Patients with Os Odontoideum versus Non-Os Odontoideum after Atlantoaxial Fixation

Yudoyono F, Kang J, Ha Y

OBJECTIVE: The purpose of this study was to compare the effect of atlantoaxial fixation on cervical alignment and clinical outcomes in patients with os odontoideum (OO) versus non-os odontoideum (non-OO). METHODS:...
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Challenges of Transarticular Screw Fixation in Young Children: Report of Surgical Treatment of a 5-Year-Old Patient's Unstable Os-Odontoideum

Takahashi , Hirabayashi H, Hashidate , Ogihara N, Mukaiyama , Komatsu M, Inaba Y, Kosho T, Kato H

Surgical procedures for atlantoaxial (C1–C2) fusion in young children are relatively uncommon. The purpose of this study was to report on a surgical treatment for a case of atlantoaxial instability...
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Comparison between Bilateral C2 Pedicle Screwing and Unilateral C2 Pedicle Screwing, Combined with Contralateral C2 Laminar Screwing, for Atlantoaxial Posterior Fixation

Miyakoshi , Hongo M, Kobayashi , Suzuki T, Abe E, Shimada Y

STUDY DESIGN: A retrospective study. PURPOSE: To compare clinical and radiological outcomes between bilateral C2 pedicle screwing (C2PS) and unilateral C2PS, combined with contralateral C2 laminar screwing (LS), for posterior atlantoaxial...
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Asymptomatic moyamoya syndrome, atlantoaxial subluxation and basal ganglia calcification in a child with Down syndrome

Lee KY, Lee KS, Weon YC

Down syndrome, the most common chromosomal abnormality, may be associated with various neurologic complications such as moyamoya syndrome, cervical spinal cord compression due to atlantoaxial subluxation, and basal ganglia damage,...
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Computer-assisted C1-C2 Transarticular Screw Fixation "Magerl Technique" for Atlantoaxial Instability

Uehara M, Takahashi , Hirabayashi H, Hashidate , Ogihara N, Mukaiyama , Kato H

STUDY DESIGN: A retrospective study. PURPOSE: To evaluate the surgical results of computer-assisted C1-C2 transarticular screw fixation for atlantoaxial instability and the usefulness of the navigation system. OVERVIEW OF LITERATURE: We used...
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Intraoperative Vertebral Artery Angiography to Guide C1-2 Transarticular Screw Fixation in a Patient with Athetoid Cerebral Palsy

Chung JC, Jung SS, Park KS, Ha HG

We present a case of an athetoid cerebral palsy with quadriparesis caused by kyphotic deformity of the cervical spine, severe spinal stenosis at the cervicomedullary junction, and atlantoaxial instability. The...
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Vertical Reduction Using Atlantoaxial Facet Spacer in Basilar Invagination with Atlantoaxial Instability

Kim IS, Hong JT, Sung JH, Byun JH

Although posterior segmental fixation technique is becoming increasingly popular, surgical treatment of craniovertebral junctional disorders is still challenging because of its complex anatomy and surrounding critical neurovascular structures. Basilar invagination...
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Successful general anesthesia for cervical spine fusion in a patient with spondyloepiphyseal dysplasia congenita: A case report

Park S, Kang SH, Joo SY, Cho EJ, Nam J

  • KMID: 1741924
  • Anesth Pain Med.
  • 2011 Jul;6(3):294-297.
Spondyloepiphyseal dysplasia congenita (SEDC) is a kind of skeletal dysplasia, inheritable condition. The clinical features of SEDC are dwarfism, myopia with or without retinal detachment, coxa vara, thoracic dysplasia with...
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Targeting a Safe Entry Point for C2 Pedicle Screw Fixation in Patients with Atlantoaxial Instability

Chun HJ, Bak KH

OBJECTIVE: This investigation was conducted to evaluate a new, safe entry point for the C2 pedicle screw, determined using the anatomical landmarks of the C2 lateral mass, the lamina, and...
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Radiographic Analysis of Atlantoaxial Fusion for Atlantoaxial Instability: Comparison of Posterior wiring, Transarticular screw, Posterior screw-rod fixation

Chung JY, Seo HY, Kim KH, Lee GW

STUDY DESIGN: This is a retrospective study. OBJECTIVES: We wanted to clarify the association between the position of the atlantoaxial fusion angle and the change of the subaxial cervical spine alignment...
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Technical Strategies and Surgical Results of C1 Lateral Mass-C2 Pedicular Screw Fixation in Atlantoaxial Disorders

Choi HJ, Kim KS, Park KS, Han IH, Chin DK, Jin BH, Cho YE

  • KMID: 1486683
  • Korean J Spine.
  • 2008 Sep;5(3):196-202.
OBJECTIVE: There are various posterior fusion techniques in managing C1-2 instability. The aim of this study is to evaluate surgical techniques and clinical results including complications of the C1 lateral...
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Troublesome Occipital Neuralgia Developed by C1-C2 Harms Construct

Rhee WT, You SH, Kim SK, Lee SY

Recently, Harms and Melcher modified Goel's approach, the C1 lateral mass and C2 pedicle screw fixation, and the new technique is currently in favor among neurosurgeons. Comparing to the advantages...
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