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Effect of ski binding parameters on knee biomechanics: a three-dimensional computational study
Nancy St-Onge1, Yan Chevalier, Nicola Hagemeister
1Laboratory in Imaging and Orthopedic Research, Research Center of the University of Montreal Hospital Center, Notre-Dame Hospital, Montreal, Canada.
Medicine and Science in Sports and Exercise
|July 6, 2004
Summary
Skiing injuries, particularly anterior cruciate ligament (ACL) tears, can be reduced. A new binding design with dual pivot points may offer better protection during phantom-foot falls, a common ACL injury mechanism.
Area of Science:
- Biomechanics
- Sports Medicine
- Orthopedics
Background:
- Downhill skiing, while generally safe, sees an increase in severe knee injuries like anterior cruciate ligament (ACL) sprains.
- Tibia and ankle injuries have decreased, but ACL injuries rose significantly between the 1970s and 1990s.
Purpose of the Study:
- To investigate how ski binding pivot point location and release features influence ACL strain.
- To evaluate the effectiveness of different binding designs in preventing ACL injuries during phantom-foot falls.
Main Methods:
- Utilized a biomechanical computer knee model to simulate the phantom-foot fall mechanism.
- Analyzed ACL strain under simulated injury conditions.
Main Results:
- Bindings with fast-release settings and a pivot point located anterior to the boot center reduce ACL strain.
- A rear pivot point is less effective in sensing loads during phantom-foot falls, offering reduced protection.
Conclusions:
- A dual-pivot binding system, with points at both the front and rear, could mitigate ACL injuries.
- This innovative binding design may enhance protection by sensing twist loads effectively at both ends of the ski.