In which phase of wound healing do myofibroblasts contribute to wound contraction?

• A. Granulation phase
• B. Remodeling phase
• C. Early wound healing
• D. Hemostasis phase

Answer: (B)

Myofibroblasts play a crucial role in wound contraction, primarily during the remodeling phase of wound healing. In this phase, which can last for months to years following an injury, myofibroblasts organize the extracellular matrix and produce collagen, contributing to the contraction and closure of the wound site. Their contractile properties help to pull the edges of the wound together, progressively reducing the size of the defect.

The remodeling phase is characterized by the transition from a provisional matrix formed during the earlier granulation phase to a more structured and durable matrix. It is in this phase that the functional integrity and strength of the tissue are restored, largely dependent on the activity of myofibroblasts. Therefore, their contribution to wound contraction is most significantly observed during this particular phase of the healing process.