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We highlight the need of surveillance neuroimaging for patients with CS, as there is the risk of new development of vascular abnormalities (particularly cavernomas).
We present a case of a patient with CS and LDD who had de novo cavernoma development several years after the initial diagnosis, as well as a review of the literature. We highlight the need of surveillance neuroimaging for patients with CS, as there is the risk of new development of vascular abnormalities (particularly cavernomas).
T1 slope has emerged as an important radiographic parameter in the evaluation and surgical management of adult cervical spinal deformity. Given the high rates of nonvisualization of T1 slope on upright cervical radiographs, however, this study examined the evaluation of C7 slope as a potential surrogate marker.

This is a retrospective review in adult patients with and without cervical deformity to examine the correlation of C7 and T1 slopes on routine upright cervical radiographs. In secondary analysis, correlations of C7 and T1 slopes were made amongst various demographic variables, different surgical groups, and various measures of cervical alignment. Cervical deformity was defined as sagittal vertical axis >40 mm, coronal Cobb angle >10°, and sagittal Cobb >10° in kyphosis.

C7 slope was visualized in 93% of patients as opposed to T1 slope in 68% of patients, leading to a final study population of 129 patients. Mean values of C7 and T1 slopes were 26.5° and 28.1°, respectively. Significant correlation was found in patients with and without cervical deformity (r= 0.9, P < 0.01). This correlation remained significant amongst demographics, surgical groups, and measures of cervical alignment.

Results demonstrated that C7 and T1 were in direct correlation in a variety of different cohorts regardless of deformity status or prior fusion. This study indicates that C7 slope may be reliably used a surrogate marker especially when visualization of T1 slope is not possible.
Results demonstrated that C7 and T1 were in direct correlation in a variety of different cohorts regardless of deformity status or prior fusion. This study indicates that C7 slope may be reliably used a surrogate marker especially when visualization of T1 slope is not possible.
Unilateral vertebral artery (VA) injury is thought to not result in serious complications. The dominant-side VA should be preserved, although the importance of the nondominant-side VA has not been discussed. The injury of VA terminating posterior inferior cerebellar artery (PICA-VA) may result in cerebellar infarction. The characteristics of PICA-VA were evaluated.

In study 1, results of head and neck magnetic resonance angiography were reviewed for 358 consecutive cases. VA diameter was measured at the V2 segment. Relationships between frequency of PICA-VA and asymmetry and diameter of the VA were analyzed. In study 2, results of magnetic resonance angiography were measured for 62 consecutive cases aged ≤39 years. Frequency of PICA-VA was compared between this young age group and 324 of the 358 cases aged ≥50 years.

Mean age for the total cohort was 67.8 ± 13.8 years (range, 10-94 years). PICA-VA was identified in 44 cases (12.3%). Mean diameter of all VAs was 3.2 ± 0.76 mm. Mean diameter of PICA-VA was 2.0 ± 0.55 mm, significantly smaller than the nondominant side in Confluence (+) (2.8 ± 0.59 mm; P < 0.001). Among the 56 VAs <2.0 mm, 26 (46.4%) were PICA-VA. PICA-VA was seen in 1 of the 62 cases aged ≤39 years (1.6%), and in 43 of the 324 cases aged ≥50 years (13.3%), showing a significantly lower frequency in the younger population (P < 0.001).

Whether PICA-VA injury causes complications is not obvious. However, PICA-VA should also be preserved considering that potential risks exist. If the VA is small or shows a large difference in diameter between sides, special care should be taken during cervical spine surgery.
Whether PICA-VA injury causes complications is not obvious. However, PICA-VA should also be preserved considering that potential risks exist. If the VA is small or shows a large difference in diameter between sides, special care should be taken during cervical spine surgery.
Musculoskeletal and neural alterations secondary to chronic atlantoaxial instability are evaluated.

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. Dynamic imaging revealed atlantoaxial instability. Atlantoaxial stabilization resulted in rapid improvement in SKS, regression of tonsillar herniation, and resolution of syrinx.

The experience with the case showcases wide ranged spinal consequences as a result of chronic atlantoaxial instability.
The experience with the case showcases wide ranged spinal consequences as a result of chronic atlantoaxial instability.In December 2019, coronavirus disease 2019 (COVID-19) was discovered in Wuhan, Hubei province, from where it spread rapidly worldwide. COVID-19 characteristics (increased infectivity, rapid spread, and general population susceptibility) pose a great challenge to hospitals. Infectious disease, pulmonology, and intensive care units have been strengthened and expanded. All other specialties have been compelled to suspend or reduce clinical and elective surgical activities. The profound effects on spine surgery call for systematic approaches to optimizing the diagnosis and treatment of spinal diseases. Based on the experience of one Italian region, we draw an archetype for assessing the current and predicted level of stress in the health care system, with the aim of enabling hospitals to make better decisions during the pandemic. Further, we provide a framework that may help guide strategies for adapting surgical spine care to the conditions of epidemic surge.Dorsal arachnoid web (DAW) is a rare clinical entity with unknown etiology, and it can mimic other conditions on imaging.1,2 We present a surgical video of a patient with DAW that was misdiagnosed as ventral cord herniation. A 35-year-old woman presented with upper back pain and progressive bilateral lower extremity weakness and numbness for a few months. HOpic mouse Magnetic resonance imaging (MRI) of the thoracic spine (T) showed ventral cord displacement with a syrinx that extended from T2-4. The computed tomography myelogram showed no contrast anterior to the spinal cord. The patient underwent T3-5 laminectomy. Intraoperatively, we found a thoracic DAW and cord displacement with no herniation (Video 1). We performed adhesiolysis to restore the cerebrospinal fluid circulation. On 4-month follow-up, the patient examination had demonstrated progressive improvement of her previous symptoms (weakness, numbness, and urinary retention), and the repeat MRI scan showed a significant reduction in the size of the syrinx. DAW can mimic other pathologies on preoperative imaging, such as ventral cord herniation and arachnoid cyst.
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