☰ Chapter 14: Injury Mechanics

• Differentiate between force and pressure or stress
• Explain how the stress continuum relates to tissue adaptation and injury
• Describe the concept of the stress threshold
• Differentiate between intrinsic and extrinsic factors related to injury development
• Identify intrinsic factors that predispose an individual to injury
• Identify extrinsic factors associated with high stress during skill performance
• Explain the concepts of "cross-training" and "within-activity cross-training"
• Suggest interventions to decrease the risk of injury when performing a task

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Wolff's law: A tissue adapts to the level of stress imposed on it; the level of adaptation in a tissue reflects the level of typical loading

Where does Wolff's law fail?


Can this curve be altered? How?

What type of stress causes injury?

Intrinsic and extrinsic factors related to injury development

Model for overuse injuries

Within-activity cross-training

• Alter-g treadmill
• Different surfaces (grass, turf, ashphalt)
• Contact versus non contact days
• Different strokes in swimming

• What are some methods for change pressure on the body through technique or equipment?
• What types of injuries do you expect to see in these sports:
  
  • Swimming
  • Football
  • Basketball
  • Cross-country
    • Are these injuries caused by intrinsic or extrinsic factors

Using biomechanical analyses to prevent injury

• Gait retraining
• Intervertebral disc testing
• Knee bracing for ACL protection
• Injury prevention warmup