Scalp & Neurosurgical Coverage

The scalp presents some of the most technically demanding reconstruction challenges in plastic surgery. Its hair-bearing tissue, curved contour, and close proximity to the brain demand a surgeon who can reliably cover large defects — including exposed calvarium and neurosurgical hardware — while preserving both form and function.^1,2

When Is Scalp Reconstruction Needed?

Scalp defects arise from many causes. The most common situations requiring reconstruction include:

• Skin cancer and tumor resection: Melanoma, squamous cell carcinoma, basal cell carcinoma, and soft tissue sarcomas can require wide excision that removes full-thickness scalp, periosteum, and sometimes outer cortical bone
• Radiation necrosis: Prior radiation to the scalp or brain can cause tissue breakdown weeks to years later, resulting in chronic wounds that fail to heal on their own
• Neurosurgical wound breakdown: Craniotomy incisions can dehisce or become infected, exposing bone flaps, titanium mesh, or cranioplasty implants that must be covered urgently
• Trauma: Avulsion injuries, burns, and crush injuries can create large areas of scalp loss that exceed what simple closure can address
• Osteomyelitis of the calvarium: Infected skull bone — often following radiation or prior surgery — may require debridement of necrotic bone followed by durable soft tissue reconstruction

Why the Scalp Is Uniquely Challenging

Unlike skin elsewhere on the body, the scalp is inelastic — it does not stretch significantly. Small defects (under 3 cm) can often be closed directly, but anything larger requires thoughtful planning.³ Several features make scalp reconstruction particularly demanding:

• Inelasticity: Local advancement is limited; closing under tension leads to wound breakdown
• Hair-bearing tissue: Replacing scalp with non-hair-bearing skin from the back or thigh creates a visible color and texture mismatch
• Contour: The curved surface of the skull requires a flap that conforms well, not one that creates a bulky, flat patch
• Proximity to the brain: Exposed dura, bone, or hardware requires urgent, reliable soft tissue coverage to prevent meningitis or intracranial infection
• Recipient vessel availability: Years of prior surgery or radiation can damage the superficial temporal or occipital vessels, requiring microsurgical expertise to identify reliable recipient vessels

Reconstruction Options

Local and Regional Flaps

For defects up to approximately 50 cm², well-planned local flaps can provide adequate coverage using adjacent, hair-bearing scalp tissue. Options include rotation flaps, advancement flaps, and transposition flaps. These are most useful for defects on a non-irradiated scalp with adequate surrounding tissue. Larger local flaps (Orticochea flap, multi-flap techniques) can address moderately sized defects but leave donor areas that may require skin grafting.

Tissue Expansion

When time permits and the remaining scalp is healthy, tissue expansion can generate significant amounts of hair-bearing scalp for reconstruction. A silicone expander is placed beneath the scalp and gradually inflated over weeks to months. Once adequate expansion is achieved, the expander is removed and the expanded flap is advanced to cover the defect. This approach yields the best aesthetic outcome because the reconstructed scalp is hair-bearing and color-matched — but it requires multiple stages and is not suitable for infected or irradiated fields.

Free Flap Reconstruction

For large defects — particularly those involving exposed calvarium, prior radiation, or failed local flaps — free tissue transfer is the gold standard.^2,4 Microsurgical free flaps provide a reliable source of well-vascularized tissue that can survive even in a hostile, previously irradiated wound bed. Common donor flaps include:

• Anterolateral thigh (ALT) flap: The most commonly used free flap for scalp reconstruction. It provides a large, reliable skin paddle based on the descending branch of the lateral circumflex femoral artery. The ALT can be harvested as a fasciocutaneous or myocutaneous flap and is thin enough to conform to the scalp contour⁵
• Latissimus dorsi free flap: The largest available donor flap, capable of covering nearly the entire calvarium. Based on the thoracodorsal vessels, it provides robust muscle bulk that is ideal when dead space obliteration is needed (e.g., after calvarial osteomyelitis debridement). A skin graft is placed over the muscle.¹
• Omental free flap: The omentum — the fatty apron within the abdomen — has exceptional anti-infective properties and conforms easily to the curved skull surface. It is particularly useful in infected or heavily contaminated fields where the risk of wound infection is high
• Radial forearm free flap: A thin, pliable option for smaller defects requiring a fasciocutaneous reconstruction with reliable vascularity

Two-Stage Reconstruction for Complex Neurosurgical Defects

When scalp loss accompanies a cranial bone defect — as occurs after calvarial osteomyelitis, tumor invasion, or hardware explantation — a staged approach is often necessary.³ In the first stage, soft tissue coverage is established with a flap to create a healthy wound environment. In the second stage (often 3–6 months later), cranioplasty is performed — using a custom titanium implant, PEEK implant, or bone cement — once the wound is clean, stable, and well-vascularized. This staged strategy dramatically reduces the risk of implant infection compared to performing both steps simultaneously in a contaminated field.

Recipient Vessels for Microsurgical Anastomosis

Free flap success depends on identifying reliable blood vessels to which the flap's artery and vein are connected. In scalp reconstruction, the most commonly used recipient vessels are:

• Superficial temporal artery and vein — the primary choice when not damaged by prior surgery or radiation
• Occipital artery — useful for posterior defects
• Facial artery/vein — an option when temporal vessels are unavailable
• External carotid system branches — in challenging cases with prior neck dissection or vessel damage

A recent systematic review and meta-analysis found that recipient vessel selection significantly impacts postoperative outcomes, underscoring the importance of careful preoperative planning and intraoperative flexibility.⁴

Dr. Lakhiani's Approach

Dr. Lakhiani works closely with neurosurgeons, head and neck surgical oncologists, and radiation oncologists to plan reconstruction that is both durable and achieves the best possible appearance. His approach emphasizes:

• Preoperative imaging to identify recipient vessels and plan flap geometry
• Collaboration with the operating neurosurgeon for cases involving simultaneous tumor resection or cranioplasty
• Microsurgical free flap transfer with loupe or microscope magnification for precise vascular anastomosis
• Thoughtful wound closure and postoperative monitoring protocols to maximize flap survival
• Long-term follow-up for patients with radiation-related wounds, who are at risk for delayed breakdown