5 Questions
What are the external forces involved in gait analysis?
Inertia, gravity, and ground reaction force (GRF)
What does the line of gravity (LOG) represent?
An imaginary vertical line from the center of gravity to the ground
When does a gravitational torque get created around a joint axis?
If the LOG passes at a distance away from the joint axis
Which components primarily assist muscles by resisting, transmitting, and absorbing forces?
Ligaments, tendons, joint capsules, and bony components
What happens if the line of gravity (LOG) passes directly through a joint axis?
No gravitational torque is created around that joint
Study Notes
External Forces in Gait Analysis
- External forces involved in gait analysis include gravity, ground reaction forces, and frictional forces.
Line of Gravity (LOG)
- The line of gravity (LOG) represents a vertical line passing through the body's center of mass.
Gravitational Torque
- A gravitational torque is created around a joint axis when the line of gravity (LOG) does not pass through the joint axis.
Components Assisting Muscles
- Bones, ligaments, and joint capsules are components that primarily assist muscles by resisting, transmitting, and absorbing forces.
Line of Gravity (LOG) and Joint Axis
- If the line of gravity (LOG) passes directly through a joint axis, no gravitational torque is created around that joint axis, and muscles do not need to generate a torque to balance the gravity.
Test your knowledge of kinetic analysis and the forces acting on the body during gait with this quiz. Explore the concepts of internal and external forces, including inertia, gravity, ground reaction force, and the role of muscles, ligaments, tendons, joint capsules, and bony components.
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