Scar, Delayed & Contracted Wound Reconstruction

A scar is the body's natural response to injury — but when scar tissue contracts across a joint, tethers the face, or spans the neck, it can severely limit movement and function. Chronic non-healing wounds and failed prior surgeries add further complexity. For patients living with these problems, surgical reconstruction can restore motion, relieve pain, and meaningfully improve quality of life. The approach depends on the cause, location, depth, and prior treatment history — and choosing the right strategy requires the judgment of a specialist.^1,2

Understanding Scar Contracture

When a wound heals, the body lays down collagen to repair the defect. In normal healing, the scar remodels over 12–18 months and becomes softer and more pliable. In some situations — particularly after deep burns, infections, or wounds that healed by secondary intention (without closure) — the scar contracts as it matures. This contracture physically shortens the tissue, pulling adjacent structures together and limiting range of motion.

Scar contractures are classified by their depth and functional impact:

• Linear contractures: A band of scar tethering two structures. Often amenable to Z-plasty or local tissue rearrangement.
• Sheet contractures: A broad plate of contracted scar — as commonly seen after burns — that reduces motion across an entire joint or region. These typically require more extensive resurfacing.
• Deep contractures: Contracture involving not just skin but underlying fascia, muscle, or even capsule. These require release of all layers and durable coverage.

Burn Scar Contractures

Deep partial-thickness and full-thickness burns that heal primarily by scarring — rather than early skin grafting — are the most common cause of severe contracture. The areas most affected are those with mobile underlying structures: the neck, axilla, elbow, hand, and face.^1,2

Burn scar contracture surgery is not about removing a scar — it is about releasing the mechanical restraint the scar creates and replacing it with tissue that can accommodate normal motion. The principles are:

• Complete release: The contracture must be divided until full, unrestricted range of motion is achieved in the underlying joint. Incomplete release leads to early recurrence.
• Immediate resurfacing: The defect created by release must be covered immediately. Raw surface left open will re-contract.
• Appropriate tissue selection: The replacement tissue must be durable, well-vascularized, and capable of withstanding the motion demands of the joint.
• Postoperative splinting and therapy: Maintaining the corrected position with splinting and physical therapy is essential to prevent recurrence during healing.

Neck Contractures

Post-burn neck contractures restrict extension, rotation, and lateral bending. In severe cases, the chin is tethered to the chest, precluding airway access. Reconstruction requires release of the cervical scar and resurfacing with thin, pliable flaps that conform to the neck's curved contour. Free flap options — particularly the anterolateral thigh flap thinned as a perforator flap — provide large, well-vascularized coverage for extensive neck contractures.^3,4

Axillary and Elbow Contractures

Axillary contractures limit shoulder abduction; elbow flexion contractures prevent full extension. Both areas respond well to Z-plasty or local flap rearrangement when contractures are linear and the surrounding skin is adequate. Sheet contractures require skin grafting or regional/free flap coverage.

Hand Contractures

The hand is the most functionally demanding area for burn scar reconstruction. Web space contractures limit digit spread and oppose; dorsal contractures prevent finger flexion. Reconstruction must be meticulous to restore individual finger independence and the thumb-index pinch critical for hand function.

Facial Scar Contractures

Contractures involving the face may distort the eyelids (ectropion), pull the mouth open, restrict jaw opening, or displace facial features. Reconstruction around the eye and mouth requires thin, color-matched tissue that will not disrupt the delicate mechanisms of these structures.⁵

Chronic Non-Healing Wounds

Some wounds fail to heal despite weeks or months of wound care. Causes include poor vascularity, infection, prior radiation, uncontrolled diabetes, and underlying osteomyelitis. When conservative wound management has been exhausted, surgical reconstruction is indicated to achieve durable wound closure.

The approach to chronic wounds follows a logical sequence:

1. Optimize systemic factors: Diabetes control, nutritional support, smoking cessation, and vascular assessment where relevant
2. Rule out and treat infection: Wound cultures, targeted antibiotics, debridement of infected or non-viable tissue
3. Assess underlying structures: Plain X-ray and MRI to identify osteomyelitis, hardware failure, or other structural problems that must be addressed before reconstruction
4. Select appropriate coverage: Well-vascularized flap tissue to overcome the local tissue deficiency

Muscle free flaps — particularly the latissimus dorsi and rectus abdominis — are especially effective for chronic wounds and osteomyelitis because muscle has superior infection-fighting properties: rich vascularity, phagocytic cellular content, and the ability to fill irregular dead space.

Delayed Reconstruction After Failed Prior Surgery

Patients who have undergone prior reconstruction attempts — whether wound closures that broke down, local flaps that failed, or skin grafts that did not take — present with scarred, depleted tissue beds and limited residual reconstructive options. These cases require careful evaluation of:

• What prior procedures were performed and why they failed
• Which local and regional donor sites have been used or remain available
• Whether a free flap is required to bypass the depleted local tissue entirely
• Whether staged reconstruction — temporary measures followed by definitive repair — is the safest path

Bringing new, healthy, well-vascularized tissue via free flap reconstruction is frequently the only reliable solution after local tissue failure. The microsurgical approach bypasses the problem entirely rather than repeatedly attempting to close a defect with tissue that has already proven insufficient.

Tissue Expansion

Tissue expansion is a technique for generating additional skin from adjacent, well-matched tissue. A silicone balloon (expander) is placed beneath the skin and gradually inflated over 6–12 weeks. The skin stretches, generating excess surface area that can then be used to reconstruct adjacent defects — with the advantage of perfect color, texture, and hair-bearing match.

Tissue expansion is particularly valuable for:

• Scalp reconstruction — generating hair-bearing scalp to close alopecic scars
• Facial reconstruction — expanding normal facial skin for color-matched replacement
• Post-burn reconstruction — expanding unburned adjacent skin to resurface contracted areas

The limitation of tissue expansion is time — the expansion process takes weeks to months — and it requires normal, compliant skin adjacent to the defect. In areas of scarred, irradiated, or previously operated skin, expansion may not be feasible.

Skin Grafting vs. Flap Coverage: The Decision Framework

Not every contracture or wound requires a flap. The choice between skin grafting and flap reconstruction depends on what structures are exposed and what the wound bed will support:⁶

• Skin graft (split-thickness or full-thickness): Appropriate when the wound bed has a robust vascular supply, there is no exposed bone or tendon, and the patient does not require the thickness and durability of a flap. Skin grafts take by absorbing nutrients from the wound bed — they fail when the bed cannot support them.
• Local or regional flap: When adjacent tissue is healthy and sufficient, local rearrangement (Z-plasty, advancement flap, rotation flap) provides durable, well-vascularized coverage without requiring microsurgery.
• Free flap: When local tissue is exhausted, irradiated, or scarred, free tissue transfer is required. Free flaps carry their own blood supply and do not depend on the wound bed for survival.

Dr. Lakhiani uses the simplest solution that achieves the reconstructive goals — escalating to free flap surgery only when simpler approaches are insufficient or inappropriate.