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4038 search results for:

Invagination 

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  1. 16-04-2024 | Invagination | Online First

    Correction: Characteristics and evaluation of C1 posterior arch variation for transpedicular screw placement between patients with and without basilar invagination

    C1 transpedicular screw (C1TS) has been widely utilized in cervical spinal fixation for the satisfactory biomechanical and clinical outcomes, including high stiffness and toggle forces, minimized blood loss, and decreased neurovascular …

  2. 01-12-2023 | Invagination | OriginalPaper

    The role of sphenoid bone in basilar invagination pathophysiology

    Basilar invagination (BI) is characterized by rostral dislocation of the cervical spine toward the skull base. The craniometrics of the skull base have shown significant differences among craniocervical junction malformations. The sphenoid bone is …

  3. 02-08-2023 | Invagination | OriginalPaper

    Characteristics and evaluation of C1 posterior arch variation for transpedicular screw placement between patients with and without basilar invagination

    C1 transpedicular screw (C1TS) has been widely utilized in cervical spinal fixation for the satisfactory biomechanical and clinical outcomes, including high stiffness and toggle forces, minimized blood loss, and decreased neurovascular …

  4. 11-12-2022 | Pancreaticojejunostomy | BriefCommunication

    Invagination Pancreaticojejunostomy Has an Endoscopic Appearance Resembling Wirsung-Jejunostomy

    Following pancreaticoduodenectomy, endoscopic evaluation of the pancreatic-intestinal anastomotic line is usually not performed because of difficulties in endoscopic accessibility. Here, we report an endoscopic appearance of the invagination

  5. 24-05-2023 | Invagination | OriginalPaper

    Surgical outcomes of basilar invagination type B without atlantoaxial dislocation through simple posterior fossa decompression: a retrospective study of 18 cases

    Basilar invagination (BI) is a common ossification-malformation in the craniocervical junction (CVJ) area and is characterized by abnormal protrusion of the odontoid process to the foramen magnum, resulting in crowding in the foramen magnum and …

  6. 17-12-2022 | Tetraparesis | Report

    Atlas invagination through the foramen magnum: expanding the spectrum of craniovertebral junction malformations

    A wide array of anomalies of the craniovertebral junction (CVJ) have been described in the literature. The richness of their spectrum reflects the structural and embryological complexity of this anatomical region [ 1 , 2 ]. Clinical presentation …

  7. Open Access 01-12-2022 | Magnetic Resonance Imaging | OriginalPaper

    Basilar invagination without atlantoaxial dislocation: treatment by correction of clivus canal angle with interfacet distraction and fixation

    Basilar invagination (BI) is a condition in which the odontoid process protrudes upwards into the skull base, causing the compression of the structures in that area, leading to neurological damage [ 1 ]. In 2004, Goel classified BI into A and B …

  8. 23-05-2022 | Invagination | OriginalPaper

    Anatomical analysis of the C2 pedicle in patients with basilar invagination

    Basilar invagination (BI) is an abnormality of the craniovertebral junction in which the odontoid process protrudes abnormally upward into the foramen magnum [ 1 – 3 ]. Various anatomical abnormalities, including cervical bone malformation and …

  9. Clinical implications of the invagination of an interwoven nitinol stent: a single-center retrospective analysis

    Stent invagination (SIV) sometimes occurs during interwoven nitinol stent (IWS) placement due to its complex deployment system. It may cause stent malapposition and reduce the minimum stent area. However, the clinical implications of SIV remain …

  10. 14-07-2022 | Invagination | OriginalPaper

    Posterior two-step distraction and reduction for basilar invagination with atlantoaxial dislocation: a novel technique for precise control of reduction degree without traction

    Basilar invagination (BI) is an occipitocervical deformity caused by abnormal development and is often associated with atlantoaxial dislocation (AAD), occipitalization of the atlas (OA), Klippel–Feil syndrome, and other deformities [ 1 – 3 ]. BI …

  11. 20-06-2022 | Spinal Anesthesia | OriginalPaper

    A comparison of hernia sac ligation versus invagination in Lichtenstein tension-free mesh hernioplasty: does the type of hernia play a role in outcomes?

    Inguinal hernia repairs are one of the most frequently performed and ubiquitous surgical procedures worldwide [ 1 ]. Although minimally invasive approaches are increasing in popularity in these repairs, as in many other surgical procedures, open …

  12. Open Access 01-12-2021 | Invagination | OriginalPaper

    Nuclear lamina invaginations are not a pathological feature of C9orf72 ALS/FTD

    The most common genetic cause of familial and sporadic amyotrophic lateral sclerosis (ALS) is a GGGGCC hexanucleotide repeat expansion (HRE) in the C9orf72 gene. While direct molecular hallmarks of the C9orf72 HRE (repeat RNA foci, dipeptide …

  13. Open Access 01-12-2020 | Chiari Malformation | OriginalPaper

    Transoral intraarticular cage distraction and C-JAWS fixation for revision of basilar invagination with irreducible atlantoaxial dislocation

    Basilar invagination (BI) with atlantoaxial dislocation (AAD) usually causes severe neurological impairment because of the prolapse of the odontoid process into the foramen magnum and ventral compression of the cervical cord [ 1 , 2 ]. Spinal cord …

  14. Open Access 01-12-2020 | Invagination | OriginalPaper

    Surgical treatment for basilar invagination with irreducible atlantoaxial dislocation: transoral atlantoaxial reduction plate fixation vs occipitocervical fixation

    Basilar invagination (BI) is a relatively common congenital or developmental anomaly of the craniocervical junction characterised by prolapse of the odontoid process into the foramen magnum, generally accompanied by irreducible atlantoaxial …

  15. 01-02-2021 | Pancreaticojejunostomy | OriginalPaper

    Comparison of Blumgart Anastomosis with Duct-to-Mucosa Anastomosis and Invagination Pancreaticojejunostomy After Pancreaticoduodenectomy: A Single-Center Propensity Score Matching Analysis

    Pancreaticoduodenectomy (PD) is a technically challenging operation performed to treat neoplastic diseases of the pancreatic head and periampullary region. The treatment of the pancreas remnant is the “Achilles heel” of this procedure, and …

  16. Open Access 01-12-2020 | Invagination | OriginalPaper

    Treatment of peri-invagination lesion and vitality preservation in an immature type III dens invaginatus: a case report

    Dens invaginatus (DI) is a developmental anomaly, which results in the deepening or invagination of the enamel organ into the dental papilla before the calcification of dental tissues [ 1 – 3 ]. It is a rare malformation of the teeth, which shows a …

  17. Open Access 01-11-2020 | Chiari Malformation | Letter

    Chiari malformation type I and basilar invagination originating from atlantoaxial instability: a literature review and critical analysis

    It seems hard to formulate an appropriate response to the letter written by Tripathi and Mohindra, in which they commented on our review.

  18. 01-06-2021 | Invagination | OriginalPaper

    A novel surgical protocol for safe and accurate placement of C1 lateral mass screws in patients with atlas assimilation, basilar invagination and atlantoaxial instability: technical details, accuracy assessment and perioperative complications

    Assimilation of the atlas, defined as the congenital fusion of the atlas to the base of the occiput, is a commonly seen feature in craniovertebral junction anomalies [ 1 , 2 ]. Such an anomaly is frequently associated with basilar invagination and …

  19. 01-07-2020 | Chiari Malformation | OriginalPaper

    The role of clivus length and cranial base flexion angle in basilar invagination and Chiari malformation pathophysiology

    The craniovertebral junction (CVJ) is an embryological and anatomically well-defined transitional zone between the skull and the cervical spine [ 1 , 4 , 17 ].

  20. Open Access 01-07-2020 | Syringomyelia | ReviewPaper

    Chiari malformation type I and basilar invagination originating from atlantoaxial instability: a literature review and critical analysis

    Time and again, hypotheses that had been approved as collective understandings of pathogenetic interactions are challenged and put into question. For the purposes of a thriving academia, it is equally as important to recognize these novel …

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