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[Finite element analysis of human tibia in vitro].
1Department of Engneering Mechanics, Xi'an Jiaotong University, Xi'an 710049.
Summary
Soldiers, dancers, and athletes face tibia fatigue fractures. Higher ground reaction forces during activities like running increase tibial stress, leading to a greater incidence of these fractures.
Area of Science:
- Biomechanics
- Orthopedics
- Sports Medicine
Context:
- Tibia fatigue fractures are common in soldiers, dancers, and athletes.
- Understanding the biomechanical forces involved is crucial for prevention.
Purpose:
- To analyze ground reaction forces (GRF) and resulting tibial stress distributions during different gaits.
- To correlate GRF and stress with the incidence of tibia fractures.
Summary:
- Measured GRF in soldiers during marching, parading, and running.
- Utilized a Finite Element (FE) model to analyze tibial stress distribution.
- Found maximum stress occurred 1/3 tibia length below the knee, correlating with clinical fracture sites.
Impact:
- Identified running as exerting the highest GRF (1391.6N) and parading as exerting 1156.4N.
- Maximum stresses of 110 MPa (parading) and 115 MPa (running) were recorded.
- Results suggest a direct relationship between increased stress and higher incidence of tibial stress fractures.