HEALING OF SKIN WOUNDS  (CUTANEOUS WOUND HEALING)

• Healing of skin wounds is a classical example of combination of regeneration & repair.
• Wound healing in two ways-

1. Healing by first intention (primary union)
2. Healing by second intention (secondary union) 

a) Healing by first intention-

• Sequence in primary union are-

1. Initial hemorrhage
2. Acute inflammatory response
3. Epithelial changes
4. Organization
5. Suture tracks

 

 

b) Healing by second intention (secondary union)-

• Characterised by-

1. Open with large tissue defect
2. Having extensive loss of tissue & cells
3. Wound left open

• Sequence of secondary intention is-

1. Initial hemorrhage
2. Inflammatory phase
3. Epithelial changes
4. Granulation tissue
5. Wound contraction- is most prominent seen in wound healing.
6. Presence of infection

 

 

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