1 / 19

Peter L. Lane, MD, FRCPC

INJURY BIOMECHANICS. Peter L. Lane, MD, FRCPC. INJURY BIOMECHANICS. INTRODUCTION. Why bother ? The science of stopping Some examples of different mechanics and the injuries they produce How we can learn more. WHY BOTHER ?. Accidents will happen People will get hurt

lyre
Download Presentation

Peter L. Lane, MD, FRCPC

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. INJURY BIOMECHANICS Peter L. Lane, MD, FRCPC

  2. INJURY BIOMECHANICS INTRODUCTION • Why bother ? • The science of stopping • Some examples of different mechanics and the injuries they produce • How we can learn more

  3. WHY BOTHER ? • Accidents will happen • People will get hurt • We'll try to fix them

  4. "ACCIDENT" • Sudden event • Unpredictable • Unavoidable

  5. INJURY AS A DISEASE • AIDS/TB analogy • Relative importance as a public health issue • Framework of analysis

  6. CLINICAL RELEVANCE • Patterns of injury • Predictive of severity and outcome • Prevention/injury control

  7. THE SCIENCE OF STOPPING • Speed doesn't kill stopping does • dv/dt = V

  8. dV/dT v e l o c i t y time (msec)

  9. dV/dT V = 15 g v e l o c i t y time (msec)

  10. dV/dT V = 100 g v e l o c i t y time (msec)

  11. THE 3 COLLISIONS • Vehicle with barrier • bony structures with vehicle interior • viscera with bony structures

  12. SLOWING THE STOP • Environmental factorsn median barriersn roadside obstaclesn traffic flow • Vehicle factorsn windshieldsn "friendly" interiorn steering column • Restraint systemsn 3 point belts air bags

  13. CONTACTS windshield steering wheel dash board pedals, firewall INJURIES face brain neck bony thorax lungs, heart, great vessels abdominal viscera knee, femur, hip, pelvis foot, ankle CRASH TYPE - FRONTAL

  14. CONTACTS window/pillar door panel/intrusion INJURIES face brain neck bony thorax lungs hip pelvis CRASH TYPE - SIDE

  15. CONTACTS head rest up head rest down seat back shoulder belt on INJURIES scalp contusions usually soft tissue strain to neck none chest contusion flexion/rotation inj to C- spine CRASH TYPE - REAR

  16. CONTACTS shoulder component lap component lap belt alone INJURIES clavicle bony thorax neck - flexion/rotation abdominal wall solid and hollow viscera - compressive above plus distraction L - spine CRASH TYPE - FRONTAL BELTS ON

  17. OTHER CRASH TYPES • Rollover • Ejection • Motor cycle • Bicycle • Pedestrian

  18. INJURY BIOMECHANICS SUMMARY • Why bother ? • The science of stopping • Some examples of different mechanics and the injuries they produce • How we can learn more

  19. MORE TO BE LEARNED • Crash investigation • Correlation with trauma registry data • Collision data project • Vehicle changes • Road design • Clinical data • Mechanics of other causes

More Related