Soft Tissue Healing Flashcards
What are the 3 main phases of soft tissue healing?
Acute inflammatory phase
Proliferative phase
Maturation Phase
What happens during the acute inflammatory phase of soft tissue healing?
Vasoconstriction in the 1st 5 minutes, followed by vasodilation in the next 5-60 minutes
Platelets block closed blood vessells
Coagulation cascade results in clot formation’
Chemical and cellular events occur
Mast cells release: HEPARIN (thins blood - prolongs clotting), HISTAMINE (promotes further vasodilation), BRADYKININ (opens blood vessel walls - creates pain and brusing)
Lasts for 0-6 days
Describe the Proliferation Phase of tissue healing (Phase 2)
Debris is removed by phagocytosis
Angiogenesis occurs and new blood vessells are formed
Fibroplasia occurs - immature type 1 and 2 collagen is laid down
Lasts 3 to 21 days
How long does the proliferation stage of tissue healing take?
3 to 21 days
Describe what occurs in stage 3 of soft tissue healing? (Maturation)
- fibrous, inelastic scar tissue forms
- collagen remodelling occurs increasing the tensile strength of the scars
- treatment should include rehabilitation exercise, passive ROM, heat
Why is early mobilization important for the maturation phase of soft tissue healing?
Early mobilization ensures that the collagen fibers are laid down in proper form. This is why gradual movement is essential post-surgery
How long does the maturation phase of soft tissue healing take?
21 days to one year
What are the key words used in the description of the acute inflammatory phase of soft tissue healing? (17)
Blanching ‘
Vasoconstriction
Platelets
Coagualtion
Clots
Vasodilation
Blood-flow
Heat
Swelling
Pain
Function
Macrophages
Neutrophils
Mast cells
Histamine
Heparin
Bradykinin
Which 3 main processes occur in the proliferation phase of soft tissue healing?
Phagocytosis
Angiogenesis
Fibroplasia
What happens during the 3 distinct processes seen in the proliferation phase of soft tissue healing?
Phagocytosis - debris is removed
Angiogenesis - new blood vessels are formed
Fibroplasia - new, immature type 1 and type 2 collagen are laid down (“immature mass of connective tissue”)
A GENERATION OF NEW EPITHELIAL CELLS ARE LAID DOWN AS A RESULT OF THESE PROCESSES
How long does the proliferation phase of soft tissue healing last?
3-21days
In the maturation phase of soft tissue healing, the formed scar tissue is __________
Fibrous, inelastic, nonvascular
In the maturation phase of soft tissue healing, collagen _______ and increase in ________ ________ of the scar occurs
Remodelling, tensile strength
In the maturation phase of soft tissue healing, _____________ ensures that collagen fibers are laid down in proper alignment
Early mobilization
In the maturation phase of soft tissue healing, a return to normal _________ _________ occurs
Histochemical activity occurs
