Vision Loss Following Vertebral Artery Injury during Surgery for Atlantoaxial Instability.

Background: A number of complications following surgery aimed at atlantoaxial fixation have been reported. However, there is no report in the literature describing visual loss following vertebral artery injury.

Objective: Vision loss as a complication of vertebral artery injury during surgery for atlantoaxial fixation is reported.

Atlantoaxial and Subaxial Cervical Spinal Instability in Two Cases with Neurofibromatosis-Type 1.

This is a report of two patients who were diagnosed to have NF-1. The patients had severe dystrophic soft tissue and bone changes leading to craniovertebral junction and subaxial cervical spinal instability and deformity. Both the patients underwent atlantoaxial and subaxial cervical spinal stabilization.

Report of an eight-year experience with Camille's transarticular technique of cervical spinal stabilization.

We present our experience with Camille's cervical transarticular screw fixation technique. During the period June 2012 to April 2020, 2422 screws were implanted in 321 patients by Camille's transarticular cervical spinal screw fixation technique. The indications of screw implantation were radiculopathy/myelopathy related to cervical spondylosis in 258 cases, cervical OPLL in 54 cases and Hirayama disease in 9 cases.

Lumbar canal stenosis in "young" - How does it differ from that in "old" - An analysis of 116 surgically treated cases.

Objective: Patients treated for lumbar canal stenosis (LCS) were retrospectively analyzed to evaluate the differences in clinical management in those below (Group A) and those above (Group B) the age of 50 years. All patients were treated with the premise that instability is the nodal point of the pathogenesis of LCS and "only-stabilization" is the surgical treatment.

Materials And Methods: During the period June 2014 to June 2020, 116 cases were diagnosed to have LCS and surgically treated by the Goel modification of Camille's transarticular screw fixation technique.

Hangman's fracture: a clinical review based on surgical treatment of 15 cases.

This is a retrospective analysis of cases with hangman's fracture. The subject of 'hangman's fracture' has been elaborately evaluated in the literature. The authors propose an alternative format of surgical treatment that is based on modification of existing classification schemes.

Atlantoaxial Instability Treated with Posterior Atlantoaxial Fixation in Two Siblings with Dyggve-Melchior-Clausen Syndrome.

Aim: To discuss the rare association of atlantoaxial instability in patients with the Dyggve-Melchior-Clausen syndrome, a rare autosomal recessive disease characterized by progressive spondyloepimetaphyseal dysplasia and mild to severe mental retardation.

Material And Methods: We report an uncommon association of two siblings with Dyggve-Melchior-Clausen syndrome, odontoid hypoplasia and atlantoaxial instability. Both the patients were treated with Goel?s atlantoaxial fixation procedure.

Atlantoaxial Instability as a Cause of Craniovertebral and Cervical Spinal Alterations and Dorsal Kyphoscoliosis.

Background: Musculoskeletal and neural alterations secondary to chronic atlantoaxial instability are evaluated.

Case Description: An 11-year-old girl presented with major symptoms of progressively worsening dorsal kyphoscoliosis (spinal kyphoscoliosis [SKS]). In addition to dorsal SKS, investigations revealed multiple craniovertebral and cervical spinal musculoskeletal abnormalities, Chiari formation, and syringomyelia.

Tethered cord and Chiari formation: Analysis of treatment in a relatively rare clinical situation.

A 32-year-old male patient was operated for tethered cord associated with spinal lipoma. Further investigations showed the presence of basilar invagination, Chiari formation, and extensive syringomyelia. His neurological symptoms continued to worsen after the surgery, and over a 3-year period, he developed spastic quadriparesis and urinary retention and constipation.