Question:medium
The tensile strength of a healing wound reaches that of unwounded tissue by which time?
The tensile strength of a healing wound reaches that of unwounded tissue by which time?
Show Hint
A scar plateaus at about 70 to 80 percent of normal skin; it never reaches 100 percent.
Updated On: Jun 24, 2026
- 6 weeks
- 2 months
- 4 months
- None
Show Solution
The Correct Option is D
Solution and Explanation
Step 1: Recovery of mechanical strength in a wound is governed by ongoing collagen synthesis, maturation, and cross-link formation. The central fact is that scar tissue stays permanently weaker than intact skin.
Step 2: Tracking the numbers, strength is about 10 percent of normal when sutures come out near day 7, then climbs steeply during the following month.
Step 3: Around the third month the rate of gain flattens out, settling at a ceiling of roughly 70 to 80 percent of original skin strength. Since the curve never touches 100 percent, no listed deadline can be right.
Step 4: Therefore the choices of 6 weeks, 2 months, and 4 months are all incorrect, and the answer must be None because full equivalence is never achieved.
\[\boxed{\text{None}}\]
Step 2: Tracking the numbers, strength is about 10 percent of normal when sutures come out near day 7, then climbs steeply during the following month.
Step 3: Around the third month the rate of gain flattens out, settling at a ceiling of roughly 70 to 80 percent of original skin strength. Since the curve never touches 100 percent, no listed deadline can be right.
Step 4: Therefore the choices of 6 weeks, 2 months, and 4 months are all incorrect, and the answer must be None because full equivalence is never achieved.
\[\boxed{\text{None}}\]
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