Wounds

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Rank and Wakefield classification is used for

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A. Scar

B. Wound Healing

C. Wounds

D. Crush Injury

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Chronic wounds do not follow the normal healing process and show no signs of healing in

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A. 1 week

B. 2 weeks

C. 3 weeks

D. 4 weeks

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Inflammatory phase of wound healing begins Immediately after formation and lasts for

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A. 36 hours

B. 72 hours

C. 1 weeks

D. 2 weeks

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Proliferative phase of wound healing begins from

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A. 24 hours

B. 2nd day

C. 3rd day

D. 6th day

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Proliferative phase of of wound healing which collagen is deposited initially?

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A. Type I collagen

B. Type II collagen

C. Type III collagen

D. Type IV collagen

Remodelling phase of of wound healing Type III collagen is replaced by

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A. Type I collagen

B. Type II collagen

C. Type IV collagen

D. Type V collagen

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Most common amino acid sequence of collagen are

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A. Glycine-Leucine

B. Glycine-Proline

C. Proline-Leucine

D. Glycine-Valine

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Major collagen in granulation tissue

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A. Type I collagen

B. Type II collagen

C. Type III collagen

D. Type V collagen

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Major collagen in normal skin

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A. Type I collagen

B. Type II collagen

C. Type III collagen

D. Type V collagen

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Ratio of type I collagen to type III collagen in final scar tissue becomes

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A. 1:1

B. 2:1

C. 1:4

D. 4:1

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In shorts

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Wound Healing & Collagen Types

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1	Normal skin	Type I : Type III Collagen Ratio is 4:1
2	Granulation Tissue	Type III is Major Collagen
3	Early Scar	Type I : Type III Collagen Ratio is 1:1
4	Final Scar	Type I : Type III Collagen Ratio is 4:1
5	Major Amino acid in normal collagen	Glycine
5	Major Amino acid sequence in normal collagen	Glycine – Proline

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Normal dermal skin

Normal dermal skin contains 80% type I (20% type III) collagen

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Scar strength

• 3% in 1 week;
• 20% in 3 weeks;
• 80% in 12 weeks
• Final matured scar is acellular and avascular.

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