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Soft Tissue Healing.

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Presentation on theme: "Soft Tissue Healing."— Presentation transcript:

1 Soft Tissue Healing

2 Objectives Understand the terminology involved in the phases of soft tissue healing Identify and explain the phases of soft tissue healing Contrast the phases of soft tissue healing

3 Terminology Vasoconstriction - blood vessels become narrow and limit flow Vasodilation - blood vessels widen to increase flow Leukocytes - white blood cells fight injury/infection Phagocytosis - clean up and digestion of damaged or foreign particles Exudate - discharge of blood elements into tissue spaces Hypoxia - lack of oxygen

4 Terminology Fibroplasia - second phase of tissue healing in which collagen fiber meshwork is formed; scar formation Fibroblast - cell that contributes to formation of connective tissue fibers Collagen - extracellular proteins that from connective tissue between cells Synthesis - development Avascular - without blood flow

5 Acute Inflammatory Response Phase
0-4 days post-injury Purpose: Formation of a clot Send cells in to clean and prepare area for scar tissue

6 Acute Inflammatory Response Phase
Vasoconstriction 5-10 min Clotting factors activated Vasodilation up to 36 hours post-injury Leukocytes and phagocytic cells sent in Cell walls more permeable so increase in exudate

7 Acute Inflammatory Response Negatives
There will be cell death due to: Trauma to involved tissue Hypoxia of surrounding healthy tissue Exposure to phagocytic enzymes by surrounding tissues Prolonged inflammation will increase amount of cells damaged

8 Proliferation Phase (Fibroplasia)
Few hours post-injury to up to 6 weeks Formation of granulation tissue which includes: Capillaries Fibroblasts Collagen synthesis Random placement of collagen Increasing strength of scar tissue Proliferation Phase (Fibroplasia)

9 Maturation Phase Can last 1 year or more
Location of injury, amount of damage will affect Unorganized collagen matrix begins to align based on tensile strength Scar tissue is: Generally weaker than original tissue Inelastic Avascular


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