Adult Trauma Patients With Thoracolumbar Injury Classification and Severity Score of 4: A Systematic Review.

STUDY DESIGN: Systematic review. OBJECTIVE: Evaluate characteristics of patients with thoracolumbar injury classification and severity (TLICS) score of 4 (To4) severity traumatic thoracolumbar injury. SUMMARY OF BACKGROUND DATA: The TLICS score is used to predict the need for operative versus nonoperative management in adult patients with traumatic thoracolumbar injury. Ambiguity exists in its application and score categorization. METHODS: A systematic review of the literature was performed. The databases of MEDLINE, Embase, Web of Science, and Cochrane Review were queried. Studies included adults with traumatic thoracolumbar injury with assigned TLICS score and description of management strategy. RESULTS: A total of 16 studies met inclusion criteria representing 1911 adult patients with traumatic thoracolumbar injury. There were 503 (26.32%) patients with To4, of which 298 (59.24%) were operative. Studies focusing on the thoracolumbar junction and AO Type A fracture morphology had To4 patient incidences of 11.15% and 52.94%, respectively. Multiple studies describe better quality of life, pain scores, and radiographic outcomes in To4 who underwent operative treatment patients. CONCLUSION: To4 injuries are more commonly AO Type A and located in the thoracolumbar junction in adult patients with traumatic thoracolumbar injury. Despite ambiguous recommendations regarding treatment provided by TLICS, outcomes favor operative intervention in this subset of traumatic thoracolumbar injury patients.

Management and outcomes of adult traumatic cervical spondyloptosis: A case report and systematic review.

STUDY DESIGN: Systematic Review. OBJECTIVE: To elucidate treatment modalities and outcomes of patients with traumatic cervical spondyloptosis (TCS). SUMMARY: Traumatic cervical spondyloptosis (TCS) is rare and typically leads to devastating neurological injury. Management strategies vary from case to case. METHODS: A systematic review of the literature identified cases of adult TCS, and data was analyzed to characterize the patient population and to assess factors that influenced clinical outcome. In addition, an illustrative case is presented in which closed reduction of a severe C7-T1 spondyloptosis injury was guided with the use of cone beam computerized tomography (O-Arm) to overcome difficulties with visualizing the cervicothoracic junction region. RESULTS: In addition to our case, we identified 52 cases of adult TCS from 34 articles. Patient age ranged from 18 to 73 (average 45.6) with male a predominance (n = 37, 71.2%). Neurological function on presentation was most commonly ASIA E (34.6%), followed by ASIA D (21.2%) and ASIA A (19.2%). The most frequently affected levels were C7-T1 (44.2%) followed by C6-7 (33.0%). Closed reduction was attempted in 42 (80.8%) patients. A total of 49 (94.2%) patients underwent surgical treatment, with 31 (63.3%) undergoing single-approach procedures. The presence of neurological injury, cervical level of injury, and age were not significant predictors of successful closed reduction. Similarly, successful closed reduction, age, cervical level of injury, and neurological injury were not predictors of a single-approach treatment. CONCLUSION: TCS is rare and most frequently appears at or near the cervicothoracic junction and in males. The presentation is typically that of severe neurological injury, but partial neurological recovery occurs in many patients. No predictors of successful closed reduction or single approach surgery are identified. We postulate that the use of intraoperative multiplanar imaging technology like the O-Arm may enhance the ability to achieve a successful closed reduction given the predilection for the injury to occur at the cervicothoracic junction. Prospective study of the durability of constructs by single or combined approaches is warranted.

Classifications and level of evidence trends from the most influential literature on thoracolumbar burst fractures: A bibliometric analysis.

Background: There are known classifications that describe thoracolumbar (TL) burst type injury but it is unclear which have the most influence on management. Our objective is to investigate the association of classification publications with the quantity and type of the most influential articles on TL burst fractures. Methods: Web of Science was searched, and exclusion and inclusion criteria were used to extract the top 100 cited articles on TL burst fractures. The effects on type, number, and other variables were separated into four eras as defined by four major classification publications. Results: 30 out of the top 100 articles represent level 1 or 2 evidence. The most influential journal was Spine, accounting for 35 articles and 4,537 citations. The highest number of articles (53) was published between the years 1995-2005, culminating with the Thoracolumbar Injury Severity Classification Score (TLICS) paper. After 2005, there was an increase in average citations per year. Following 2013, the number of highly influential articles decreased, and systematic reviews (SRs) became a larger proportion of the literature. There was a statistically significant increase in the level of 1 and 2 evidence articles with time until the publication of TLICS. The predictive value of time for higher levels of evidence was only seen in the pre-2005 years (AUC: 0.717, 95% CI 0.579-0.855, p = 0.002). Conclusions: In 1994, two articles marked the beginning of an era of highly influential TL burst fracture literature. The 2005 TLICS score was associated with a preceding increase in LOE and productivity. Following 2005, the literature saw a decrease in productivity and an increase in systematic review/meta-analysis (SR-MAs). These trends represent an increase in scholarly discussion that led to a systematic synthesis of the existing literature after publication of the 2005 TLICS article.

Understanding the Biological Basis of Glioblastoma Patient-derived Spheroids.

BACKGROUND/AIM: Resistance to glioblastoma (GB) therapy is attributed to the presence of glioblastoma stem cells (GSC). Here, we defined the behavior of GSC as it pertains to proliferation, migration, and angiogenesis. MATERIALS AND METHODS: Human-derived GSC were isolated and cultured from GB patient tumors. Xenograft GSC were extracted from the xenograft tumors, and spheroids were created and compared with human GSC spheroids by flow cytometry, migration, proliferation, and angiogenesis assays. Oct3/4 and Sox2, GFAP, and Ku80 expression was assessed by immunoanalysis. RESULTS: The xenograft model showed the formation of two different tumors with distinct characteristics. Tumors formed at 2 weeks were less aggressive with well-defined margins, whereas tumors formed in 5 months were diffuse and aggressive. Expression of Oct3/4 and Sox2 was positive in both human and xenograft GSC. Positive Ku80 expression in xenograft GSC confirmed their human origin. Human and xenograft GSC migrated vigorously in collagen and Matrigel, respectively. Xenograft GSC displayed a higher rate of migration and invasion than human GSC. CONCLUSION: Human GSC were more aggressive in growth and proliferation than xenograft GSC, while xenograft GSC had increased invasion and migration compared to human GSC. A simple in vitro spheroid system for GSC provides a superior platform for the development of precision medicine in the treatment of GB.