Week 2 - Pooja Nair

Name: Pooja Nair

Clinical Mentor: Dr. Jason Spector

This week, I wanted to highlight a few surgeries I shadowed earlier but didn’t get the chance to discuss. One case involved spinal closure after hardware placement, and another involved cranial closure following hematoma evacuation. Both reinforced how essential meticulous closure is for protecting underlying structures after major interventions.

The case that stood out most was a skin graft for a degloving injury behind the knee caused by a bike accident. In this type of trauma, a large section of skin and soft tissue is forcibly separated from the underlying structures. To reconstruct the area, the team harvested a split‑thickness skin graft from the thigh using a dermatome, which removes a thin, controlled layer of skin. After harvesting, the graft was manually meshed with a blade to create small perforations, allowing it to stretch and cover a larger surface area while maintaining vascularity. The graft was then placed over the defect behind the knee.

What interested me most was the healing process after graft placement. The skin graft survives by first relying on diffusion and then developing its own blood supply as vessels from the wound bed grow into it, a process called revascularization. Early adherence is secured by fibrin, and this bond strengthens as vascular connections form. New epithelial cells then migrate across the graft to restore the skin barrier, while fibroblasts produce collagen that is gradually remodeled to support structure and function. The coordinated processes of angiogenesis, epithelialization, and collagen remodeling ultimately help stabilize and integrate the graft.1


References

1.      Elseth, A. & Lopez, O. N. Wound Grafts. StatPearls https://www.ncbi.nlm.nih.gov/books/NBK564382/ (2025).

 

 

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