SLIDE 1:
SAE / Government Meeting
Washington, D.C.
May 2005


SLIDE 2:
Overview of the Enhancements
and Changes in theCIREN Program



SLIDE 3:
History of Phase One

- Established 1997 (7 centers)
  * Four Federal centers
  * Three GM centers (3 years)

- By 2001 three additional centers 
  * Industry and private funding

- Core concentration
  * Serious and/or disabling injury
  * Multidisciplinary research approach
	- Medicine and Engineering essential



SLIDE 4:
Phase One Major Accomplishments

- Over 2700 cases collected

- Over 100 related peer reviewed articles

- Multitude of outreach activities

- Biomechanical injury analysis

- Knee-Thigh-Hip discovery/project

- URGENCY algorithm 

- ATLS and Field Triage update

- ACN research

- Outcome research



SLIDE 5:
Improvements Needed

- Data timeliness
  * Streamline dataset
	
- Uniform data collection and case analysis
  * All centers in unison on process and procedure

- Increased engineering input and data
  * Engineering more involved
  * More engineering type data captured

- Greater access to data
  * More data exposure in NHTSA
  * Greater public access
  * Increased data access by centers



SLIDE 6:
Improvements – Phase Two 

- Data timeliness
  * Updated CIREN Coding Manual 
	- Eliminates non-used data points and duplication

- Uniform data collection and case analysis
  * Updated CIREN Coding Manual 
	- Establishes uniform practices and definitions

- Increased engineering input and data
  * Biomechanic Tab (in development)
	- Unique engineering data on each AIS 2+ injury coded

- Greater access to data
  * Multiple new CIREN accounts within NHTSA
  * Increased public cases
  * New servers will allow all cases to be shared
	- All data and graphics available to all sites F/T



SLIDE 7:
Improved Biomechanical Data

- Current data structure too general

- True biomechanical definitions needed

- Hard coded engineering data 
  * Injury causation scenario (ICS)
  * Injury mechanisms


SLIDE 8:
Improved Biomechanical Data
New Biomechanical Tab Flowchart



SLIDE 9:
Bio Tab

- New body region classification
  * Segments
  * Joints

- Establish load paths
  * Cervical fx from safety belt (frontal)
	- Indirect – Belt restraint webbing
	- Belt restraint webbing to chest (ribs) to thoracic spine to cervical spine




SLIDE 10:
Bio Tab
- Injury mechanism
  * General to all BR
	Compression
	Shear
	Puncture
	Cutting
	Crushing
	Heat
	Chemical

- BR specific – example
  * Cervical Spine
	Axial compression
	Axial tension
	Flexion
	Extension
	Lateral bending


SLIDE 11:
Bio Tab Example

  * Passenger side door impact
  * Rt front passenger - Belted avg. adult
  * Pelvic fractures
	- Rt acetabulum
	- Rt pubic rami

Was this injury caused by another injury? NO



SLIDE 12:
Injury Causation Scenario (ICS) 
Evidence = Yes

  * Kinematics
  * Contact evidence
  * Injury pattern
  * Intrusion


SLIDE 13:
 ICS Example

  * 100 degree impact
  * Occupant moves right as door intrudes
  * Occupant contacts arm rest
	- Scuffing and transfers
	- Confidence - Certain


SLIDE 14:
ICS Details

  * Source of energy - CRASH
  * Body region injured - HIP JOINT
  * Involved Physical Component  (IPC) - RIGHT SIDE DOOR ARMREST
  * Body region contacted by IPC - THIGH
  * Confidence = Certain

Was the injured BR directly contacted by the IPC?
NO – Develop internal load path



SLIDE 15:
Internal Load Path

  * Energy path from injury to component
  * Mult. body regions involved
  * IPC to Thigh to Hip joint
	IPC = arm rest



SLIDE 16:
Injury Mechanism

  * COMPRESSION
  * Compression of the femoral head into the acetabular socket
  * Confidence = Certain


SLIDE 17:
Bio Tab Data

  * 852604.3 Pelvic Fx (Acetabular fx – 808.0)
  * Injured body region = Hip joint
  * Energy from crash
  * Involved physical component – Rt door arm rest
  * Intrusion factor
  * Energy path – Thigh to Hip joint
  * Mechanism = Compression





SLIDE 18:
Example 2

  * Frontal crash
  * 9 y/o 5’ tall 120 lbs. 
  * Left rear passenger
  * 3 pt. belt  - Shoulder portion behind
  * L3 spinal fx and post. ligament injury
  * Multiple other abdominal injuries

Was this injury caused by another injury? - NO


SLIDE 19:
ICS Evidence = YES

  * Kinematics
  * Contact evidence
  * Injury pattern
  * Interview data



SLIDE 20:
ICS Example #2

  * 340 degree impact
  * Occupant moves forward
  * Lap belt loaded (alone)
  * Occupant “hinges” over lap belt
  * Confidence = Certain


SLIDE 21: 
ICS Details
  
* Source of energy - CRASH

* Body region injured - LUMBAR SPINE

* Involved Physical Component  (IPC) - BELT RESTRAINT WEBBING

* Body region contacted by IPC - ABDOMEN

* Confidence = Certain

Was the the injured BR directly contacted by the IPC?
NO – Develop internal load path


SLIDE 22:
Internal Load Path
 
  * Energy path from injury to component
  * Mult. body regions involved
  * IPC to Abdomen to Lumbar spine 
  * IPC = Belt restraint webbing


SLIDE 23:
Injury Mechanism

  * FLEXION COMPRESSION
  * Flexion of the spine over the belt
  * Compression on the vertebral body
  * Confidence = Probable


SLIDE 24:
Bio Tab Data Example #2

  * 650622.3 L4 Facet Fx (Lumbar F/D – 53B1)
  * Injured body region = Lumbar spine
  * Energy from crash
  * Involved component – Belt restraint webbing
  * Improper belt use factor
  * Energy path – Abdomen to lumbar spine
  * Mechanism = Flexion and compression



SLIDE 25:
Modeling and Simulation
Academia/Industry – Movement towards simulation

Universal need for improved field data
  * New crash investigation techniques and data
  * Increased EDR data 


SLIDE 26:
Medical Imaging Technology
- Improved radiology data capture
- Utilize the DICOM CAT scan images in CIREN
- Applications
  * Elderly tolerance
  * Exact anthropometric measurements
  * 3-D injury mapping 


SLIDE 27:
Thank You,
Questions?