Acute Burn Excision / Skin Grafting | Existing website questions

Tangential excision removes tissue layer by layer tangential to the wound bed until viable tissue is encountered; pinpoint capillary bleeding marks adequate excision. The wound is then covered with a split skin graft. The technique depends on burn size, site, depth and patient factors, and combinations may be used. The goal is to close burn wounds within three weeks to maximize functional and aesthetic outcomes; deep partial to full thickness wounds would otherwise heal beyond three weeks. If residual dermis is not grafted, it may slough, and untreated wounds beyond three weeks can lead to infection, sepsis, scarring or chronic wounds.

Partial-thickness burns are often treated conservatively because spontaneous healing is expected within about 14 days unless infection deepens the injury. Deep partial-thickness to full-thickness burns may not reepithelialize within three weeks, so excision and grafting can close the wound sooner and reduce sepsis, scarring and hospital stay. Early excision is especially appropriate for flame or dry-heat injuries, whereas scalds often need a more conservative approach because some areas may heal without surgery. If depth is uncertain, early excision of doubtful areas may remove tissue that could have healed, worsening scarring. For very extensive deep burns in patients not fit for early surgery, dressings with intermittent debridement may continue until grafting is possible.

It is usually 0.2–0.7 mm thick and taken with a skin-cutting instrument, often from the thigh or back. Because it is thinner than a full-thickness graft, it needs less blood supply to survive and can cover larger areas; it may be meshed to expand further. It is commonly used for burns, large superficial defects, chronic ulcers and temporary coverage. The donor site usually heals within several days because some skin structures remain. Grafts first survive by diffusion until new blood vessels grow in, and are often fixed with staples or stitches. However, this graft often lacks hair follicles and sweat glands, and may have poorer elasticity, more scarring and contracture than thicker grafts.

Graft take depends on a healthy wound bed, good hemostasis and avoiding hematoma, seroma, shear or infection. The first dressing change lets the team look for adherence, color and early problems, while graft take is observed at each dressing change and formally measured as a percentage by day 14. If the wound heals completely before day 14, you may be asked to return for examination and a photograph on day 14. Discharge timing depends on the treating doctor's discretion. Donor-site healing and overall wound condition also guide how closely the graft is monitored and whether further dressing changes are needed. Photographs may be taken on day 0, day 7 and day 14 to document progress.

Analgesics work best on a schedule; early after a burn, intramuscular injections are less effective because absorption is poor. Doses are adjusted for dressing changes, exercises or debridement, and treating anxiety matters too. Partial-thickness burns with intact nerve endings hurt more than full-thickness burns. Open burn wounds hurt more in air, so dressings reduce pain. Donor sites can be as painful as superficial burns initially; dressing changes three to five days after grafting may include removing stitches or staples, which patients often call excruciating, so premedication is important. Pain varies by person and day, so one fixed plan can overmedicate or undermedicate; vigilance and flexibility matter.

The graft is taken from an uninjured area and placed over the prepared wound bed. Meshing expands it mainly in width, not length, and helps it conform to uneven surfaces. It also reduces the donor area needed and lets exudate or haematoma drain, improving graft take. Small-to-moderate wounds may use 1:1.5 meshing, while larger burns may need 1:3 or 1:6. Wider meshing covers more area but leaves a visible pattern and can take longer to heal, with more contracture. The face is usually left unmeshed for cosmetic reasons, where an unmeshed sheet graft improves scar quality at the cost of donor site size.

After grafting, later pressure-garment use is individualized by scar quality and response. Their exact mechanism is unclear, but they may improve scar texture and color over time. Silicone sheets can help on finger backs and web spaces under gloves; silicone gel sheeting needs daily care for up to 18 months and may cause dermatitis or folliculitis. Daily intermittent massage with lubricant does no harm and can be used on any surface scar. Coban wrapping can help control swelling. Hand therapy continues until function returns or stops improving, then a maintenance program follows. For facial burns, pressure is often started soon after new skin forms and may continue during scar maturation for up to two years.

Burn scar contractures can follow prolonged healing, delayed skin regrowth, burns across bending surfaces and long periods in a flexed position; myofibroblasts drive collagen buildup and cross-linking. Early excision and grafting closes deep partial-thickness and full-thickness wounds that would otherwise heal beyond three weeks, reducing scarring. Early wound closure also limits prolonged inflammation and myofibroblast-driven collagen cross-linking, while splints, positioning, physiotherapy and pressure garments support joint mobility during scar remodeling. Early surgery also reduces time in a flexed position and helps preserve range of motion. Rehabilitation may continue for months because scar remodeling and joint mobility need sustained therapy. The exact plan depends on burn depth, location and your overall condition.

Operative excision and grafting are recommended for burn wounds unlikely to heal within three weeks, and early excision has reduced mortality from burn wound sepsis. Tangential excision removes tissue layer by layer until pinpoint bleeding shows a graftable bed; fascial excision may be used in full-thickness or critically ill patients to reduce bleeding and speed surgery. With experience, skin graft take should consistently be above 80%. Long-term problems can include hypertrophic scarring, contractures, pigment changes, itching and pain. Recovery and treatment needs vary with burn severity, age and general health. Excision should commence once the patient is stabilized after initial resuscitation, often around hospital day three, though some surgeons recommend complete excision within the first 24 hours.