Understanding Skin Grafts

A skin graft is a thin layer of skin taken from a healthy part of the body and placed on a damaged area. Skin grafting is crucial when the body cannot heal large or deep wounds by itself. Commonly, skin grafts are used to treat severe burns, particularly those affecting a large body surface area. By covering the burn injury with donor skin, the grafted skin helps the wound heal faster, preventing infection and minimising scarring.

Types of Skin Grafts

There are two main types of skin grafts used in burn treatment:

  1. Split Skin Graft (SSG): This type involves the removal of the top layer (epidermis) and a portion of the deeper layers (dermis) from the donor site. Split-thickness skin grafts are commonly used for larger burns because they cover extensive areas. The thin shaving of skin can be turned into a meshed skin graft to cover a larger wound, allowing for stretching surrounding tissue and better coverage of large burn wounds. After surgery, the wound heals as the tiny blood vessels grow into the graft and supply it with blood, helping it integrate into the surrounding skin.
  2. Full Thickness Skin Graft (FTSG): In contrast to split-thickness grafts, full-thickness skin grafts involve removing both the epidermis and the entire dermis from the donor site. This type of graft provides better cosmetic outcomes because it matches the texture and colour of the surrounding tissue more closely. However, full-thickness grafts are typically used for smaller areas, such as the face or hands. Where the burn injury affects deeper layers, a full-thickness skin graft may be the best option.

The Skin Grafting Process

As with any plastic procedure, skin graft surgery requires a thorough pre-operative assessment. During the assessment, the plastic surgeon will give details regarding the plan for your surgery, where the skin donated for the graft will be taken from, and how much bed rest you need post-treatment.

During skin graft surgery – usually done under local anaesthetic – the burn wound is cleaned to remove dead tissue and debris. Then, the surgeon harvests healthy tissue from a donor site, often located on the upper thigh, buttocks, or upper arm. After transplantation, the graft site is secured with sutures or staples, ensuring it stays in place until newly healed skin forms and the graft integrates into the original blood supply.

 

Healing Process and Recovery

Once the graft is applied, both the donor site and graft site require careful monitoring. The healing process depends on the type of graft, the size of the burn, and the patient’s overall health. Split-thickness skin grafts tend to heal faster, but full-thickness grafts often provide better long-term cosmetic results. For the first couple of weeks, patients will need regular dressing changes, and assessments.

The healing time varies, but in general, expect several weeks of recovery, especially for large wounds. During this period, avoid accidental bumps or other forms of trauma to the grafted area.

Also, protect newly healed areas from sun exposure, which can lead to permanent tan or discolouration. Using protective clothing and sunscreen and following instructions for scar management can significantly improve the appearance of scars. Gentle bathing, followed by patting the area dry and applying non-perfumed cream, helps keep the skin hydrated. You must check with your plastic surgeon or the after-care team regarding what is suitable for the wound.

 

Complex Grafting Techniques

In some cases, flap surgery or tissue expansion may be necessary to treat extensive burns. Tissue expansion involves the use of a balloon-like device called an expander, which is placed under the skin near the burn area. Over time, this device is gradually filled with saline to stretch the surrounding tissue, providing extra skin for grafting. Composite grafts, which include skin and underlying tissue, may be used in more complex reconstructive surgery to restore function and appearance.

Advancements in tissue engineering also offer potential alternatives to traditional grafts. In some cases, artificially grown skin cells or bioengineered skin substitutes are used when there isn’t enough healthy skin for grafting.

 

Managing Burn Recovery and Long-Term Care

For successful recovery, patients must follow a healthy, balanced diet, avoid passive smoking – passive smoking slows the healing process – and get plenty of rest. In some cases, a blood transfusion may be necessary if there is significant blood loss during the procedure. Maintaining newly healed areas with proper skin care, including the use of non-perfumed moisturising cream, is key to preventing delayed healing and complications like wound breakdown.

A dedicated burns or scar management team will work with the patient throughout recovery to monitor healing and prevent complications.

Skin grafts for treating burns are a lifesaving and crucial intervention, helping patients recover from severe burns and regain normal function. The healing process requires close monitoring of both the donor and graft sites and comprehensive aftercare to reduce scarring and enhance the overall outcome. With the guidance of a specialised burns team and modern surgical techniques, burn patients can achieve an improved quality of life through skin grafting.

 

Find Our Clinic

Goutos London
152 Harley Street
London
W1G 7LH