#3 - Applications of Work and Energy to Health and Injury

What is the definition of energy in relation to work and injury?

Energy is defined as the ability to perform work and is measured in Joules (J).

What are the types of energy?

Thermal, Mechanical, Chemical, Electromagnetic, and Nuclear.

What does the principle of Conservation of Energy state?

It states that energy is neither created nor destroyed.

What is Kinetic Energy?

Kinetic Energy is the energy of a body in motion.

What is Potential Energy?

Potential Energy is the energy of position or deformation.

What is Deformational (Strain) Energy related to?

It is related to the material and structural properties of tissues and strain.

What can be considered as a primary mechanism in Injury Prevention?

The dissipation of energy.

What is the standard unit for pressure?

Pascal (Pa) which is equal to 1 N/m².

If the tibia bone has an ultimate pressure tolerance of 1 MPa, how does force affect it?

If the applied force exceeds the pressure tolerance, the tibia may fracture.

What is Joint Stability?

Joint Stability is the ability of a joint to maintain an appropriate functional position throughout its range of motion.

What is the definition of spinal stability?

Spinal stability is the ability of the spine to limit displacement patterns to prevent damage or irritation to the spinal cord and nerve roots.

What are the factors determining joint stability?

Joint stability is determined by the geometry of articular surfaces, periarticular passive tissues, and periarticular muscles.

What is a misconception regarding stability in relation to degeneration?

Increased stability is not always good; it can lead to increased degeneration.

What phenomenon occurs during joint manipulation?

Audible 'cracking' sound known as cavitation, along with an increase in joint space and range of motion.