Understanding Wound Healing Tensile Strength
The tensile strength of healed skin, particularly scar tissue, is a critical measure of its integrity after the healing process is complete. This strength is always compared to that of uninjured, normal skin.
Tensile Strength Comparison
Scar tissue formation is part of the natural healing process. While it restores the integrity of the skin barrier, it typically does not achieve the same level of strength as the original, undamaged skin. The collagen fibers in scar tissue are arranged differently and are less organized than those in normal skin.
Maximum Achieved Strength
Studies and clinical observations indicate that fully healed wounds, forming mature scar tissue, typically regain a significant portion of the original skin's tensile strength, but not full strength. The maximum tensile strength that a healed wound can reach is generally accepted to be within a specific percentage range compared to normal skin.
- Normal skin has 100% tensile strength.
- Mature scar tissue typically reaches between 60% to 80% of the tensile strength of the original, uninjured skin.
Therefore, the maximum tensile strength a wound can reach after healing is complete, in comparison to normal skin, is in the range of 60% to 80%.
Important Questions from Healing Process
Which of the following are correct for managing hypertrophic scars?
1. Silicone gel sheeting
2. Intralesional steroid injections
3. Vitamin A gel applications
4. Laser treatment
Select the answer using the code given below.
- What is the correct order of the normal phases of wound healing?
- In a fracture of shaft of longbone, the component which contributes least in fracture healing is:
- A 20 year old female was operated for perforation peritonitis and after closing the rectus sheet her abdominal wound was left open to heal with proliferative granulation tissue which contracted and epithelized to form a scar. This patient had undergone healing by:
- In a sutured surgical wound, the process of epithelialization is completed within:
