Experimental Flexibility Measurements for the Development of a Computational Head-Neck Model Validated for Near-Vertex Head Impact

1997 ◽  
Author(s):  
Daniel L. Camacho ◽  
Roger W. Nightingale ◽  
Joseph J. Robinette ◽  
Sanjay K. Vanguri ◽  
Douglas J. Coates ◽  
...  
Keyword(s):  
Head Impact ◽  
Head Neck

scholarly journals Dependency of Head Impact Rotation on Head-Neck Positioning and Soft Tissue Forces

2019 ◽  
Vol 66 (4) ◽  
pp. 988-999 ◽  
Author(s):  
Michael Fanton ◽  
Calvin Kuo ◽  
Jake Sganga ◽  
Fidel Hernandez ◽  
David B. Camarillo
Keyword(s):  
Soft Tissue ◽  
Head Impact ◽  
Head Neck

626 Simulation of the head impact using a head-neck finite element model

2009 ◽  
Vol 2008.21 (0) ◽  
pp. 465-466
Author(s):  
Akira YAMAOKA ◽  
Yusuke MIYAZAKI ◽  
Sadayuki UJIHASHI ◽  
Jonas A. PRAMUDITA ◽  
Yuichiro SAKAMOTO
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Head Impact ◽  
Head Neck

Effect of Protective Helmet Mass on Head/Neck Dynamics

1981 ◽  
Vol 103 (1) ◽  
pp. 18-23 ◽  
Author(s):  
R. L. Huston ◽  
J. Sears
Keyword(s):  
Computer Simulation ◽  
Quantitative Analysis ◽  
Added Mass ◽  
Head Impact ◽  
Computer Simulation Model ◽  
Direct Impact ◽  
Hyperextension Injury ◽  
Direct Head ◽  
Crash Helmet ◽  
Head Neck

The crash helmet which provides protection against injury due to direct head impact may actually contribute to injury in indirect head impact (e.g., hyperflexion or “whiplash”) situations because of the added mass of the helmet on the head/neck system. It has been suggested that it may be possible to reduce this hyperflexion/hyperextension injury hazard while retaining the beneficial protection against direct impact through use of helmet restraining collars, such as styrofoam or inflatable airbags. These claims are quantitatively and qualitatively examined and discussed in this paper. The UCIN HEAD/NECK computer simulation model is used for the quantitative analysis. It is shown that the helmet can indeed contribute to the hyperflexion/hyperextension injury hazard and that the proposed restraining devices can potentially provide protection against this hazard.

scholarly journals Heading in Soccer: Does Kinematics of the Head‐Neck‐Torso Alignment Influence Head Acceleration?

2021 ◽  
Vol 77 (1) ◽  
pp. 71-80
Author(s):  
Stephan Becker ◽  
Joshua Berger ◽  
Oliver Ludwig ◽  
Daniel Günther ◽  
Jens Kelm ◽  
...  
Keyword(s):  
Scientific Evidence ◽  
Cumulative Effect ◽  
Head Impact ◽  
Soccer Players ◽  
Head Acceleration ◽  
Ball Speed ◽  
Significant Difference ◽  
Potential Risks ◽  
The Relationship ◽  
Head Neck

Abstract There is little scientific evidence regarding the cumulative effect of purposeful heading. The head-neck-torso alignment is considered to be of great importance when it comes to minimizing potential risks when heading. Therefore, this study determined the relationship between head-neck-torso alignment (cervical spine, head, thoracic spine) and the acceleration of the head, the relationship between head acceleration and maximum ball speed after head impact and differences between head accelerations throughout different heading approaches (standing, jumping, running). A total of 60 male soccer players (18.9 ± 4.0 years, 177.6 ± 14.9 cm, 73.1 ± 8.6 kg) participated in the study. Head accelerations were measured by a telemetric Noraxon DTS 3D Sensor, whereas angles for the head-neck-torso alignment and ball speed were analyzed with a Qualisys Track Manager program. No relationship at all was found for the standing, jumping and running approaches. Concerning the relationship between head acceleration and maximum ball speed after head impact only for the standing header a significant result was calculated (p = 0.024, R2 = .085). A significant difference in head acceleration (p < .001) was identified between standing, jumping and running headers. To sum up, the relationship between head acceleration and head-neck-torso alignment is more complex than initially assumed and could not be proven in this study. Furthermore first data were generated to check whether the acceleration of the head is a predictor for the resulting maximum ball speed after head impact, but further investigations have to follow. Lastly, we confirmed the results that the head acceleration differs with the approach.

scholarly journals Forensic Engineering Analysis Of head Impact From Falling Picture Frame

2009 ◽  
Vol 26 (2) ◽  
Author(s):  
Michael Kravitz
Keyword(s):  
Head And Neck ◽  
Analytical Model ◽  
Head Impact ◽  
Spring Constant ◽  
Engineering Analysis ◽  
Flat Screen ◽  
Forensic Engineering ◽  
Spring Constants ◽  
Picture Frame ◽  
Head Neck

This Paper Will Examine The Effect Of An Oak Picture Frame That Was Wall Mounted Around A Flatcreen Television. The Frame Fell From The Flat Screen Television Down 6 Inches Onto A Fireplace Mantel,Nd Then Rotated Away From The Wall, And The Upper Edge Of The Frame Struck The Plaintiff On The Head.He Plaintiff Was Sitting On An Ottoman In Front Of The Fireplace Facing Away From The Fireplace And Wasot Aware Of The Impending Impact. Plaintiff Sued The Premisesowner, Claiming Various Head, Neck Andental Injuries. An Engineering Analysis Was Performed To Assess The Magnitude Of The Force Applied Tolaintiff Neck With An Analytical Model Which Was Developed To Check The Analysis Claimed By The Opposingxpert Biomechanical Engineer. The Writer, Not A Biomechanical Engineer, Analyzed The Magnitudef The Compressive Neck Loading. The Writer Developed A Head-Neck Model That Was Utilized In Thenalysis. The Neck Was Modeled As A Spring; The Head A Sphere; The Neck-Spring Was Mounted On A Rigidlatform, I.E., The Shoulder. Based On Research, Ranges Of Spring Constants Were Estimated For The Neck.He Writer Settled On A Maximum And Minimum Neck Spring Constant With Correlating Damping. Thessue In The Case For The Writer Was The Magnitude Of The Force Applied To The Head And Neck And Whetherhat Force Was Sufficient To Cause The Injuries Claimed By The Plaintiff. The Bio-Mechanical Engineeringssues Are Addressed In The Corresponding Paper By Jon O. Jacobson, Ph.D., P.E. The Case Went Throughany Pre-Trial Discussions And Scheduling, Along With The Deposition Of The Writers Which Were Taken Bylaintiff Attorney. A Formal Written Report Was Not Prepared. Mathcad Calculations With Sidebar Explanationsere Prepared And Supplemented With An Oral Report To The Clients. As A Result Of The Analysis, Thease Settled At The Eleventh Hour Prior To Trial

Head, Neck, and Neuroanatomy (THIEME Atlas of Anatomy), Latin nomenclature

2016 ◽  
Author(s):  
Michael Schuenke ◽  
Erik Schulte ◽  
Udo Schumacher
Keyword(s):  
Head Neck

Head, Neck, and Neuroanatomy (THIEME Atlas of Anatomy)

2015 ◽  
Author(s):  
Michael Schuenke ◽  
Erik Schulte ◽  
Udo Schumacher
Keyword(s):  
Head Neck
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