The "Skipped Segment Screw" Construct: An Alternative to Conventional Lateral Mass Fixation-Biomechanical Analysis in a Porcine Cervical Spine Model.

The "Skipped Segment Screw" Construct: An Alternative to Conventional Lateral Mass Fixation-Biomechanical Analysis in a Porcine Cervical Spine Model. Asian Spine J. 2017 Oct;11(5):733-738 Authors: Padhye KP, Murugan Y, Milton R, Nambi Raj NA, David KS Abstract Study Design: Cadaveric biomechanical study. Purpose: We compared the "skipped segment screw" (SSS) construct with the conventional "all segment screw" (ASS) construct for cervical spine fixation in six degrees of freedom in terms of the range of motion (ROM). Overview of Literature: Currently, no clear guidelines are available in the literature for the configuration of lateral mass (LM) screwrod fixation for cervical spine stabilization. Most surgeons tend to insert screws bilaterally at all segments from C3 to C6 with the assumption that implants at every level will provide maximum stability. Methods: Six porcine cervical spine specimens were harvested from fresh 6-9-month-old pigs. Each specimen was sequentially tested in the following order: intact uninstrumented (UIS), SSS (LM screws in C3, C5, and C7 bilaterally), and ASS (LM screws in C3-C7 bilaterally). Biomechanical testing was performed with a force of 2 Nm in six degrees of freedom and 3D motion tracking was performed. Results: The two-tailed paired t-test was used for statistical analysis. There was a significant decrease in ROM in instrumented specimens compared with that in UIS specimens in...
Source: Asian Spine Journal - Category: Orthopaedics Tags: Asian Spine J Source Type: research

Related Links:

Authors: Katsiki N, Tousoulis D PMID: 32454183 [PubMed - as supplied by publisher]
Source: Hellenic Journal of Cardiology - Category: Cardiology Tags: Hellenic J Cardiol Source Type: research
Publication date: Available online 27 May 2020Source: Computers in Human BehaviorAuthor(s): Matthias Stadler, Sarah Hofer, Samuel Greiff
Source: Computers in Human Behavior - Category: Information Technology Source Type: research
Publication date: Available online 27 May 2020Source: The Lancet HIVAuthor(s): Zibusiso Ndlovu, Rosie Burton, Rosanna Stewart, Helen Bygrave, Teri Roberts, Emmanuel Fajardo, Anafi Mataka, Elisabeth Szumilin, Bernhard Kerschberger, Gilles Van Cutsem, Tom Ellman
Source: The Lancet HIV - Category: Infectious Diseases Source Type: research
Publication date: Available online 28 May 2020Source: Microbial PathogenesisAuthor(s): Mani Divya, Sekar Vijayakumar, Jingdi Chen, Baskaralingam Vaseeharan, Esteban F. Durán-Lara
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
Publication date: Available online 27 May 2020Source: Microbial PathogenesisAuthor(s): R.B.G. Pessoa, D.S.C. Marques, R.O.H.A. Lima, M.B.M. Oliveira, G.M.S. Lima, E.V.M. Maciel de Carvalho, L.C.B.B. Coelho
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
Publication date: June 2020Source: Journal of Global Antimicrobial Resistance, Volume 21Author(s): Getuţa Nicolae Dopcea, Ioan Dopcea, Alina Elena Nanu, Camelia Filofteia Diguţă, Florentina Matei
Source: Journal of Global Antimicrobial Resistance - Category: Infectious Diseases Source Type: research
ConclusionsIn conclusion, the cases studied by us may indicate that the infrequency ofN. nana infections may not necessarily be related to the low infectivity of this fungal agent, but they are rather associated with misdiagnosis. Furthermore,N. nana reservoirs should also be sought in soil.
Source: Infection - Category: Infectious Diseases Source Type: research
Authors: Gök G, Cinar T, Duman D, Nurkelam Z Abstract Introduction: Rheumatic heart disease predisposes to structural changes in the mitral valve including commissural fusion and calcification with subsequent narrowing of the mitral valve orifice resulting in rheumatic mitral stenosis (RMS). To define the best therapeutic strategy, an accurate measurement of mitral valve area (MVA) for RMS is of paramount importance. The propose of the present study was to assess the agreement between the mitral navigation method (MVN) and three-dimensional (3D) planimetry in the assessment of MVA in patients with RMS.Methods:...
Source: Acta Cardiologica - Category: Cardiology Tags: Acta Cardiol Source Type: research
Authors: Suwa Y, Miyasaka Y, Taniguchi N, Harada S, Nakai E, Shiojima I Abstract Background: Infective endocarditis is a serious septic disease, and the epidemiological profile has changed over the last decade. However, there is a paucity of data regarding the current outcome and predictor of in-hospital mortality in patients with infective endocarditis.Methods: Consecutive patients diagnosed as infective endocarditis based on the modified Duke criteria at Kansai Medical University hospital from January 2006 to June 2019 were prospectively included. The primary outcome was in-hospital mortality. Cox proportional ha...
Source: Acta Cardiologica - Category: Cardiology Tags: Acta Cardiol Source Type: research
Authors: Wery F, Delaere B, Schraverus P, Higny J PMID: 32452723 [PubMed - as supplied by publisher]
Source: Acta Cardiologica - Category: Cardiology Tags: Acta Cardiol Source Type: research
More News: Statistics | Study