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Iliac Wing Force

Description​

Lateral force measured at the iliac wing represents the force applied to the side of the pelvis, which is a common contact point in side impacts [1]. WebSAT combines this measurement with the acetabulum Y-axis force to evaluate the side-impact pelvis load.

This metric does not have a separate button. WebSAT displays the iliac-force curve and uses it in the combined force result when you select Injury Metrics > Acetabulum/Iliac Force for a supported side-impact test.

Iliac Wing
Iliac Wings

Measurements used by WebSAT​

  • Force at the Iliac (Y)

How WebSAT processes the data​

  1. Convert the iliac force to newtons (N), if necessary.
  2. Filter the iliac force at CFC 600.
  3. Add the filtered iliac Y-axis force to the filtered acetabulum Y-axis force.
  4. Find the peak combined force for the impact side.
  5. Compare the peak combined force with the applicable reference value.

References​

[1] Lambrecht D, Van Oost J. Bilateral Symmetric Fracture of the Iliac Wings: An Unusual Situation after a Car Accident. Case Rep Orthop. 2019 Oct 20;2019:7942904.

[2] "Side Impact Crashworthiness Evaluation". Guidelines for Rating Injury Measures (Version III), Insurance Institute for Highway Safety, May 2014.