No abstract available.
Spondylolisthesis*

No abstract available.
Biopsy* ; Diagnosis* ; Fractures, Compression* ; Pathology*

No abstract available.
Kyphosis* ; Laminectomy* ; Spinal Cord Diseases*

The coronavirus disease 2019 (COVID-19) pandemic has significantly affected all specialty practices in medicine, including the field of spinal surgery. Spinal surgery is unique in that the procedures include not only fully elective and fully emergent interventions, but also involve a separate group of semi-emergent surgeries, where delayed intervention may lead to permanent neurological deficits. Here, we present an evidence-based review on the impact of the COVID-19 pandemic on spinal surgery and our current knowledge about this issue. We conducted a thorough search of the PubMed, Medline, and Google Scholar databases using the keywords, “COVID-19,” “COVID-19 impact on spine surgery,” “coronavirus impact on spine surgery,” “COVID-19 impact on neurosurgery,” “coronavirus impact on neurosurgery,” “COVID-19 impact on spine surgeons,” and “coronavirus impact on spine surgeons” on May 6, 2020. A total of 8,322 articles were identified in the initial search. Articles that were duplicated, those that did not pertain to COVID-19 or spine surgeries, those with details not pertaining to the current topic of interest, and those published in languages other than English were excluded from our analyses. After complete screening, six articles were included in this review. During the previous few weeks, the COVID pandemic has significantly influenced all major aspects of spine surgery across the world. Outpatient care has been gradually shifted from physical visits to tele-health and online consultations. General recommendations have favored the conservative approach over surgeries, although no patient should be deprived of standard care owing to concerns about COVID. The general principles followed by spine surgeons should include early detection of COVID symptomatology; triaging of patients based on underlying spinal pathology; prescription of appropriate investigations to confirm the COVID status; isolation, as needed; selection of optimal management method as per the guidelines; adherence to best intraoperative practices; and ensuring protective measures for non-infected patients, family members, fellow heath care providers, and themselves against the disease.

STUDY DESIGN: Radiological cohort study. PURPOSE: The options of posteriorly stabilizing C7 vertebra include using lateral mass, pedicle or lamina, as bony anchors. The current study is a computed tomography (CT)-based morphometric analysis of C7 vertebra of 100 Indian patients and discusses the feasibility of these different techniques. OVERVIEW OF LITERATURE: C7 is a peculiar vertebra with unique anatomy, which poses challenges for each of these fixation modalities. There are no reports available in the literature, which discuss and compare the feasibility of diverse posterior C7 fixation techniques in Indian population. METHODS: We included 100 consecutive cervical spine CT scans of Indian patients performed between July 2016 and September 2016. We excluded CT scans with any significant congenital anomaly or other pathological lesions of C7 and patients with non-Indian ethnicity. Regarding screw placement, we assessed and studied various dimensions of the C7 lateral mass, pedicles, and laminae in relevant sections. RESULTS: The mean age of our patients was 49.5±16.1 years. We included 56 male and 44 female patients. The mean anteroposterior and mediolateral dimensions of the lateral mass were 11.38±1.76 and 12.91±1.82 mm, respectively. The mean length of the lateral mass screw (Magerl technique) was 12.17±1.9 mm; 92% of patients could accommodate a lateral mass screw at least 10-mm long (unicortical), whereas 48% could accommodate a screw (unicortical) longer than 12 mm. Foramen transversarium was found in 30.5% of lateral masses. The mean outer and inner cortical widths of the pedicles were 6.5±0.71 mm and 3.72±0.61 mm, respectively. Approximately 58% of pedicles could accommodate 3.5-mm screws (based on the inner cortical pedicle width). The outer cortical and inner cortical widths of the laminae were 6.21±1.2 mm and 3.23±0.9 mm, respectively. Subsequently, 37% of the laminae could accommodate 3.5-mm screws. The mean angle of intralaminar screw trajectory was 50.7°±5.1°, and the mean length of the intralaminar screw was 32.6±3.05 mm. In addition, 96.4% and 60.7% of male patients could accommodate lateral mass screws longer than 10 mm and 12 mm, respectively. However, only 86.4% and 31.8% of female patients could accommodate 10- and 12-mm long lateral mass screws, respectively. Furthermore, 75% of male patients and 36% of female patients had pedicles that could accommodate 3.5-mm diameter screws, and 48.2% of male patients had laminae that could accommodate 3.5-mm screws; however, only 22.7% of female patients could accommodate 3.5-mm laminar screws. CONCLUSIONS: Based on our CT-guided morphometric analysis, 92% and 48% of Indian patients could accommodate at least 10- and 12-mm long lateral mass screws, and 58% of pedicles and 37% of laminae could accommodate 3.5-mm screws. Thus, lateral mass screws (between 10- and 12-mm long) seem to be the safest feasible option for C7 fixation. In case of the need for an alternative mode of stabilization (pedicle or intralaminar screw), particularly in female patients, careful preoperative planning with a CT scan is of utmost importance.
Cervical Vertebrae ; Cohort Studies ; Female ; Humans ; Male ; Pedicle Screws ; Spine ; Tomography, X-Ray Computed

No abstract available.
Intervertebral Disc* ; Vacuum*

Methods: Data regarding patients, who underwent PFD for ACM-I presenting with SM and scoliosis between January 2009 and December 2018, were retrospectively collected. Only patients with 2-year follow-up were included. Sagittal/coronal deformity and sagittal spinopelvic parameters were examined. Symmetry and extent of tonsillar descent, as well as morphology (configuration/variation) and extent of syrinx were determined. Results: A total of 42 patients (20 females; age: 14.2±5.8 years) were included; 35 patients (83.3%) had atypical curves. Mean preoperative coronal Cobb was 57.7°±20.9°; and 12 (28.6%) had significant coronal imbalance. Tonsillar descent was classified as grade 1, 2, and 3 in 16 (38.1%), 11 (26.2%), and 15 (35.7%) patients; 35 patients (83.3%) had asymmetric tonsillar descent; 17 (40.4%), 3 (7.1%), 16 (38.1%), and 6 (14.4%) had circumscribed, moniliform, dilated, and slender syrinx patterns; and 9 (21.4%), 12 (28.6%), and 21 (50%) of syrinx were right-sided, left-sided, and centric. There was no significant relationship between side of tonsillar dominance (p =0.31), grade of descent (p =0.30), and convexity of deformity. There was significant association between side of syrinx and convexity of scoliosis (p =0.01). PFD was performed in all, and deformity correction was performed in 23 patients. In curves ≤40°, PFD alone could stabilize scoliosis progression (p =0.02). There was significant reduction in syrinx/cord ratio following PFD (p <0.001). Conclusions ACM-I+SM patients had atypical curve patterns in 83% of cases, and the side of syrinx deviation correlates with scoliosis convexity. Syrinx shrinks significantly following PFD. PFD may not stabilize scoliosis in curves >40°.