584 Soft Tissue Injuries

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584 Soft Tissue Injuries
2013-02-12 14:16:18
584 Soft Tissue Injuries

584 Soft Tissue Injuries
Show Answers:

  1. What are the 4 types of soft tissues?
    • 1. Epithelial
    • 2. Nervous
    • 3. Muscle
    • 4. Connective
  2. 5 Functions of Connective Tissue
    • Protect delicate organs
    • Provide structural body framework
    • Support and connect other interconnecting tissue within organs
    • Transport substances from one region to another
    • fight against potential pathogenic invaders (Internal defense mechanism)
  3. Why does a ligament rupture?
    External force is usual cause
  4. Biomechanical Terminologies:
    Which type of properties?
    Characteristics of a particular specimen with the consideration of the effect of its geometry or density.The tensile force for breaking ligaments of an elbow joint.
     Structural properties
  5. Biomechanical Terminologies:
    General behavior of a material without considering any information pertaining to its size and shape.
    The ultimate tensile stress an anterior cruciate ligament. 
    Material properties
  6. Biomechanical Terminologies:
    -Force per unit area (same units as pressure)
    -It varies with direction and with the surface it acts on.
  7. Biomechanical Terminologies:
    The amount of deformation an object experiences compared to its original size and
  8. What is hysteresis?
    Some energy is lost, heat energy
  9. What are the Factors Affecting Biomechanical Properties?
    • Age
    • Strain rate
    • Temperature
    • Loading orientation
    • Immobilization vs exercises
  10. True or false:
    Strength of ligament gets stronger with
    maturation then drops with old age
  11. The following are reasons for what?
    *Less water and proteoglycan in tissue
    *Increase non-reducible cross-links with aging (structure hardens)
    *Elastin becomes brittle and less extensible
    *Less turnover of collagen
    *Loss of tissue compliance and decrease shock-absorption capacity
    Reasons for weakening with age
  12. True or false?
    If material is pulled apart quickly the
    tensile strength will decrease
    False - it will increase
  13. True or false?
    Higher the strain rate -> higher the risk of failure
    False - LOWER the risk of failure
  14. Temperature increases, ________ increases
  15. Higher risk of injury in cold or warm weather?
    • Cold - effect of temperature
    • -Compared with a warm ligament, a cold ligament can reach its failure stress at substantially lower strain
  16. True or false?
    Ligament along axis of alignment will have max strength
    True - different angles are weaker
  17. True or false?
    After immobilization recovery time is faster with exercise than without
  18. Will weaken ligaments/tendons
  19. Can quickly restore the strength of ligaments/tendons after immobilization
  20. 4 causes of soft tissue injuries
    • Trauma (direct/indirect)
    • Overuse
    • Underlying diseases
    • Chemical agents (eg inflammation)
  21. 2 causes of muscle damage
    • DOMS
    • Muscle strain injury
  22. What are the symptoms of muscle strain?
    • Pain
    • Muscle spasm
    • Loss of strength
    • Limited ROM
  23. What are the 3 stages and timing of healing?
    • Inflammatory phase (2-3 days)
    • Proliferative phase (3-14 days)
    • Remodeling/maturation phase (2 weeks -2 years)
  24. What are the risks of immobilization?
    • Chronic pain
    • Muscle atrophy
    • Ligament weakness
    • Joint stiffness
    • Ischemia
    • Heat injury
    • Pressure sores
    • Skin breakdown, infection, dermatitis
    • Neurologic injury
    • Compartment Syndrome