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Primary factors affecting maximum torsional loading of the tibia in running
Ryuji Kawamoto1, Yusuke Ishige, Koji Watarai
1Laboratory of Sports Sciences, Department of Life Sciences, University of Tokyo, Meguro, Tokyo, Japan.
Sports Biomechanics
|December 9, 2003
Summary
This study identified key factors influencing tibial torsional moments during running. High outward shank tilt and greater vertical ground reaction forces significantly increase this rotational loading, potentially reducing running injuries.
Area of Science:
- Biomechanics
- Sports Medicine
- Orthopedics
Background:
- Running injuries, particularly tibial stress injuries, are common in athletes.
- Understanding the biomechanical factors causing tibial torsional loading is crucial for injury prevention.
Purpose of the Study:
- To identify primary factors contributing to the maximum tibial torsional moment during running.
- To correlate shank kinematics and ground reaction forces with tibial rotational loading.
Main Methods:
- Utilized three-dimensional shank kinematics and ground reaction forces from eight male runners.
- Modeled the tibia and foot as coupled rigid bodies.
- Calculated net tibial axial moments using inverse dynamics to determine tibial torsional moment.
Main Results:
- Significant inter-individual variations in tibial torsional moment were observed.
- Maximum tibial torsional moment correlated significantly with frontal plane shank outward tilt (r = 0.78) and vertical ground reaction force (r = 0.70).
Conclusions:
- Shank outward tilt and vertical ground reaction force are primary contributors to tibial torsional loading during running.
- Interventions targeting these factors may reduce tibial torsional loading and associated running injuries.