Biomechanics of Ankle and Hindfoot Injuries in Dynamic Axial Loading 2000-01-SC23
Twenty-three Post Mortem Human Surrogate (PMHS) limbs were
impacted using a test set up that was developed to simulate the
loading conditions seen in a frontal collision. Articulation
studies were performed on each limb prior to impact.
Failure occurred at impact loads of 5.7+/-1.9 kN (resultant
tibial failure load 6.4+/-1.9 kN) and the following injuries were
generated: 9 intra-articular calcaneal fractures; 1 talar neck and
2 talar body fracture; 3 intra-articular distal tibial (pilon)
fractures; 2 malleolar fractures; 3 soft tissue injuries and 3 had
no detectable injury.
The impact test conditions were replicated with a Hybrid III leg
in a first attempt at developing injury risk functions for the
This study has demonstrated the significance of pre-load through
muscle tension and the intrinsic properties of PMHS specimens in
the generation of severe ankle and hindfoot injury.
Univ of Nottingham
44th Stapp Car Crash Conference (2000)
Stapp Car Crash Journal Vol. 44, 2000-P-362