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Chapter 4 Notes –

Chapter 4 Notes – . Basics of Tissue Injuries. Soft Tissue injuries – often call wounds – very common! Sprains – bleed internally – injuries to ligaments Strains – injury to a muscle or tendon

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Chapter 4 Notes –

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  1. Chapter 4 Notes – Basics of Tissue Injuries

  2. Soft Tissue injuries – often call wounds – very common! • Sprains – bleed internally – injuries to ligaments • Strains – injury to a muscle or tendon • 1st, 2nd, 3rd degree injuries (depends on tendon damage – 3rd degree worst, complete rupture cannot move body part • Nerves – brain & spinal cord • Nerve tissue connects the brain & spinal cord with all of the parts of the body. • Pg. 36-37 Soft Tissue Injuries

  3. Stage 1: Acute Inflammatory • Phagocytes are specialized cells that engulf & eat up dead cells • 2 days • Stage 2: Repair • Fibroblasts (fiber-building cells) begin building fibers across the area of injury. Fibroblasts form a scar, 6 weeks to 3 months • Stage 3: Remodeling • Takes up to a year or more to fully heal • Healing Time • Greater the injury the longer the healing time • Degree of injury, location (blood supply), and age Stages of Soft-Tissue Healing

  4. Types of Bone Injuries • Dislocations – When bones come together – Articulate • Dislocation – means significant force displaces bone so they no longer line-up • can cause avulsion, strains, sprains, disruption of blood flow, disruption of nerve conditions Bone Injuries

  5. Fractures – Amount of energy required to cause a fracture – is called the failure point – very from person to person. • Fractures are named according to the type of impact & how failure occurs • Pg. 40-42 Bone Injuries

  6. Stage 1: Acute Bone breaks, bleeding occurs, Osteoclasts begin to “eat” the debris or resorb into the body. Osteoclasts begin to add new layers to the outside of the bone tissue. 4 days Bone Fracture Healing

  7. Stage II – Repair Osteoclasts & Osteoblasts continue to regenerate the bone. A bony splint, called the fibrous callus forms. Internally & externally to hold the bone together. 3 month process. Some athletes are able to return to competition. Bone Fracture Healing

  8. Stage III: Remodeling • Take several years to complete. Callus is reabsorbed & replaced with a fibrous cord of bone that is formed around the fracture site. • If a bone never heals, it is called a nonunion fracture. Bone Fracture Healing

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