scholarly journals Mapping occipital bone thickness using computed tomography for safe screw placement

2015 ◽  
Vol 23 (2) ◽  
pp. 254-258 ◽  
Author(s):  
Tomonori Morita ◽  
Tsuneo Takebayashi ◽  
Hiroyuki Takashima ◽  
Mitsunori Yoshimoto ◽  
Kazunori Ida ◽  
...  
Keyword(s):  
Morphological Analysis ◽  
Reference Range ◽  
Occipital Bone ◽  
Institutional Review Board ◽  
Morphological Data ◽  
Screw Placement ◽  
Female Group ◽  
Bone Thickness ◽  
Institutional Review ◽  
Neck Disease

OBJECT Safe and effective insertion of occipital bone screws requires morphological analysis of the occipital bone, which is poorly documented in the literature. The authors of this study present morphological data for determining the area of screw placement for optimal internal fixation. METHODS The subjects of this institutional review board-approved retrospective study were 105 individuals without head and neck disease who underwent CT imaging at the authors’ hospital. There were 55 males and 50 females, with a mean age of 57.1 years (range 20–91 years). Measurements using CT were taken according to a matrix of 55 points following a grid with 1-cm spacing based on the external occipital protuberance (EOP). RESULTS The maximum thickness of the occipital bone was at the level of the EOP at 16.4 mm. Areas with thicknesses > 8 mm were more frequent at the EOP and up to 2 cm in all directions, as well as up to 1 cm in all directions at a height of 1 cm inferiorly, and up to 3 cm from the EOP inferiorly. The male group tended to have a thicker occipital bone than the female group, and the differences were significant around the EOP. The ratio of the trabecular bone to the occipital bone thickness was > 30% in the central region. At positions more than 2 cm laterally, the ratio was < 15%, and the ratio gradually decreased further laterally. CONCLUSIONS Screws that are 8 mm long can be placed in the area extending 2 cm laterally from the EOP at the level of the superior nuchal line and approximately 3 cm inferior to the center. These results suggest that it may be possible to effectively insert a screw over a wider area than the conventional reference range.

Mapping of Venous Sinus Anatomy and Occipital Bone Thickness for Safe Screw Placement in 100 patients with 46,200 Standardized Measurements Using Computed Tomography Angiography

Spine ◽  
2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Marie-Jacqueline Reisener ◽  
Artine Arzani ◽  
Ichiro Okano ◽  
Stephan N. Salzmann ◽  
Colleen Rentenberger ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Venous Sinus ◽  
Occipital Bone ◽  
Screw Placement ◽  
Bone Thickness

scholarly journals The Impact of NORTH STAR on Suicidality, Substance Problems, Intimate Partner Violence, and Child Abuse

2020 ◽  
Author(s):  
Amy M Smith Slep ◽  
Richard E Heyman ◽  
Michael F Lorber ◽  
David J Linkh
Keyword(s):  
Intimate Partner Violence ◽  
Child Abuse ◽  
Air Force ◽  
Partner Violence ◽  
Absolute Risk ◽  
Intimate Partner ◽  
Institutional Review Board ◽  
Cross Sectional ◽  
Institutional Review ◽  
The Impact

Abstract Introduction We evaluated the effectiveness of New Orientation for Reducing Threats to Health from Secretive-problems That Affect Readiness (NORTH STAR), a community assessment, planning, and action framework to reduce the prevalence of suicidality, substance problems, intimate partner violence, and child abuse. Materials and Methods One-third of U.S. Air Force bases worldwide were randomly assigned to NORTH STAR (n = 12) or an assessment-and-feedback-only condition (n = 12). Two Air Force-wide, cross-sectional, anonymous, web-based surveys were conducted of randomly selected samples assessing risk/protective factors and outcomes. This study was reviewed and approved by the institutional review board at the investigators’ university and by the institutional review board at Fort Detrick. Results NORTH STAR, relative to control, bases experienced a 33% absolute risk reduction in hazardous drinking rates and cumulative risk, although, given the small number of bases, these effects were not statistically significant. Conclusions Given its relatively low cost, use of empirically supported light-touch interventions, and emphasis on sustainability with existing resources, NORTH STAR may be a useful system for prevention of a range of adult behavioral health problems that are difficult to impact.

scholarly journals 2019 Novel Coronavirus Vaccination among Post-graduate Residents and Fellows

2021 ◽  
Vol 12 ◽  
pp. 215013272110229
Author(s):  
Mostafa Abohelwa ◽  
Mohamed Elmassry ◽  
John Abdelmalek ◽  
Drew Payne ◽  
Kenneth Nugent
Keyword(s):  
Side Effects ◽  
Healthcare Workers ◽  
Healthcare Providers ◽  
The United States ◽  
Health Sciences ◽  
Institutional Review Board ◽  
Institutional Review ◽  
Texas Tech University ◽  
Novel Coronavirus ◽  
United States Healthcare

Background Coronavirus-2 (COVID-19) has caused a worldwide pandemic since December 2019. Since then, clinical trials with vaccines have been started and completed, and at present, 3 COVID-19 vaccines have been approved for use in the United States. Healthcare providers were among the first to get vaccinated, but the precise attitudes of healthcare workers toward vaccination are uncertain. Objective To understand residents and fellows’ attitudes toward vaccination and record any side effects after vaccination. Methods We conducted an anonymous survey that was open from 3-1-2021 to 3-12-2021 using distribution lists from the Graduate Medical Education office on the Lubbock campus of the Texas Tech University Health Sciences Center after getting approval from the Institutional Review Board (L21-088). Results Eighty-one residents and fellows (26.6% out of 304) responded to our survey. Among those who responded, 63 (77.8 %) were between 25 and 35 years old, and 41 (50.6%) were males. Seventy-seven (95.1%) received the vaccine (Pfizer-BioNTech), 78 (96.3%) reported that they supported vaccination, and 3 (3.7%) reported that they did not want vaccination. Eight members (9.8%) had tested positive for COVID-19 infection before vaccination, but only 1 (1.23%) had tested positive for COVID-19 antibodies. All residents and fellows reported side effects after the vaccination, including pain at the injection site (77; 100%), local redness (9; 11.6%), local swelling (13; 16.8%), fever (25; 32.5%), fatigue (25; 32.5%), chills (34; 44.1 %), headache (38; 49.4%). Conclusions Most medical trainees have a high interest in COVID-19 vaccination; however, a few reported that they did not want vaccination.

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