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Local flap technique

Bilobed Flap

A bilobed flap moves two joined lobes of skin at once. The first lobe fills the wound, the second fills the space left by the first, and the last small area is closed directly, which shares the movement across a wider area.

Bilobed Flap
Anaesthesia
Local anaesthetic for most cases, general anaesthesia if preferred
Hospital stay
Usually day care
Back to routine
Desk work within a few days, avoiding pressure on the nose
Cost band
See treatment pages
Quick answer

A bilobed flap is a double transposition. Two lobes of skin share one base, and both pivot together. The first lobe swings into the defect, the second lobe swings into the gap the first has left, and the smaller space remaining is stitched closed. Sharing the movement in two steps means each step is small, which is what allows tight skin such as the nose to be closed.

Key takeaways
  • A bilobed flap moves two joined lobes together, so tissue travels in two small steps rather than one large one.
  • It is most often used on the lower part of the nose, where the skin is thick and barely moves.
  • Skin is borrowed from the upper nose, which is looser, and the final small gap is closed directly.
  • The scar pattern is complex, so the lines are placed along the natural borders of the nose where possible.
  • Puffiness in the lobes is common early and usually settles over months as the scar tissue matures.
Bilobed flap: A bilobed flap is a local flap made of two joined lobes that pivot together, the first filling the defect and the second filling the space left by the first.

What a bilobed flap does

The lower part of the nose presents a real problem. Skin there is thick, oily and firmly attached, so it will not slide or stretch far, and a graft in that position rarely matches the surrounding surface. What the nose does have is looser skin higher up, closer to the bridge. A bilobed flap is the bridge between those two facts.

Two lobes are drawn side by side, sharing a single base, and they rotate together. The first lobe drops into the wound. The second lobe, which comes from the looser upper area, moves into the gap the first lobe vacated. What remains is a smaller space that closes directly. Splitting the movement in two means no single step demands much from the tissue.

Careful planning matters more here than in a simple flap. The lobes must be sized so each one fills its target without stretching, and the pivot must be placed so nothing pulls on the nostril rim. When the geometry is right, the nose keeps its shape and the scars follow its natural borders. When it is wrong, the rim lifts, and that is far harder to correct afterwards.

Wounds often closed with this flap
✦Defects on the tip or side of the nose after removal of a skin cancer
✦Wounds on the lower nose too large to close directly
✦Nasal defects where a graft would leave a visible patch
✦Some wounds on the cheek near the nasal border
✦Defects on the back of the hand where skin is limited in one direction
✦Small wounds on the temple with loose skin further along

Signs the flap needs urgent review

Either lobe turns dusky, blue or dark rather than pink.
The nostril rim looks pulled upward compared with the other side.
Firm swelling suggests blood has collected beneath the flap.
Fever, spreading redness or increasing pain in the days after surgery.

When a bilobed flap is the right choice

This flap suits defects on tight, thick skin where a single flap could not reach and a graft would look obvious. Nasal wounds are the classic example.

May be suitable when
✦The defect sits on the lower nose, where skin is thick and does not move.
✦Looser skin is available further up the nose to feed the second lobe.
✦Matching texture and thickness matters more than keeping the scar simple.
✦The wound is moderate in size, so each lobe stays small enough to survive.
May not be suitable when
✦The defect is large, or reaches deeply into the nostril rim and lining.
✦The nose has already been operated on or irradiated, leaving little movable skin.
✦The design would pull the nostril rim upward, which is hard to correct later.
✦Smoking or poor circulation puts a flap with two pivoting lobes at real risk.

How the flap is planned and moved

01
Assessing the defect

The wound is measured and its position judged against the nostril rim. How much skin can be borrowed from higher up the nose is tested by pinching the tissue.

02
Designing the lobes

Two lobes are then marked, sharing one base and pivoting around a common point. Sizes are chosen so each lobe fills its target without being stretched to reach it.

03
Raising the flap

Both lobes are lifted together with the layer beneath, keeping the base attached and the blood supply intact. Thinning is done cautiously, since the tip depends on that supply.

04
Transposing and insetting

The first lobe is turned into the defect and the second follows into the space it leaves. Both are inset with deep stitches, then closed neatly at the surface.

05
Closing and dressing

The remaining space is closed directly and any small fold at the pivot is trimmed. A light dressing supports the nose, and the flap is reviewed within a few days.

Recovery after a bilobed flap

Day 1 to 3

Swelling and bruising around the nose and under the eyes are common. Rest, a raised head position and simple pain relief help through this stage.

Week 1 to 2

Stitches come out early on the face. The lobes usually look pink, firm and slightly puffy once the dressing is removed.

Week 6

Most swelling has settled and the scar lines start to pale. Glasses and masks can usually be worn again by now if they were restricted.

Month 6 and beyond

The flap continues to soften and flatten. Any persistent puffiness or a small fold at the pivot can be reviewed and adjusted at this point.

What this flap can achieve

✦Tight nasal skin can be closed without a graft that would show as a patch.
✦Tissue matches the nose in colour, thickness and texture, because it comes from the nose.
✦Dividing the movement into two steps keeps tension low at each one.
✦Scar lines can be steered along the natural borders of the nose.
✦Most repairs are completed in a single sitting, often under local anaesthetic.

What results are realistic

When the design is right, the nose keeps its shape and the repaired area matches its surroundings closely. Expect several curved scar lines that stay pink for months, and puffiness in the lobes that can take longer to settle than patients anticipate. A small raised area at the pivot is common. Minor asymmetry between the two sides of the nose may remain, and a small adjustment is sometimes offered once healing is complete.

Risks to weigh up

Two lobes mean two areas depending on one blood supply, and the nose leaves little room for error in the design.

Loss of part of a lobe, most likely in smokers or where a lobe was stretched to reach.
Lifting or notching of the nostril rim if tension was misjudged.
A puffy, raised flap that stays firm for several months.
Bleeding beneath the flap, which lifts it off the wound bed.
A visible pattern of curved scars, which may need a small revision later.

Caring for the flap and the donor lines

The lobes and the lines they came from all sit on the nose, so protecting the whole area matters. Pressure is the main thing to keep off it.

✦Avoid glasses, masks or anything resting on the nose until the clinic allows it.
✦Sleep with the head raised to help swelling settle more quickly.
✦Do not smoke, since a flap with two pivoting lobes is sensitive to reduced blood flow.
✦Keep the suture lines clean and dry, following the dressing plan given to you.
✦Once healed, use sun protection and begin massage on the scars only when advised.

Common misunderstandings

MythTwo lobes mean twice the risk.
In practice

Dividing the movement actually lowers tension at each step. The design is more complex to plan, but each individual step asks less of the tissue.

MythA graft would be simpler and just as good.
In practice

On the lower nose a graft often heals as a visible patch of different colour and texture. Local skin matches because it comes from the same area.

MythThe nose will look finished within a few weeks.
In practice

Puffiness in the lobes commonly takes months to settle. Judging the shape too early gives a misleading impression of the final result.

MythScars can be hidden completely on the nose.
In practice

Lines are placed along natural borders wherever possible, but a curved pattern remains. It fades with time rather than disappearing.

Why patients choose Elegance Clinic

At Elegance Clinic in Surat, nasal reconstruction is planned with the nostril rim in mind first, because protecting that edge decides how natural the nose looks afterwards.

✦The design is drawn on the nose at consultation so you can see the scar pattern.
✦Honest discussion of grafts and flaps, including how each would look in that spot.
✦A written estimate before admission covering surgery, dressings and review visits.
✦Planned reviews, with any small adjustment considered only after swelling has gone.
Further reading from independent sources
Cost & insurance

Cost and insurance

Technique pages do not carry their own price, because the cost depends on the treatment the technique is used within. The same flap may close a small nasal defect after skin cancer surgery or form part of a wider facial reconstruction.

Before admission you receive a written estimate covering surgery, anaesthesia, dressings and planned review visits. For bands, please see the relevant treatment page or the costs section.

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Patients ask

Questions patients ask, answered

These are the questions that come up most often in consultation. If yours is not here, send it on WhatsApp and the team will reply, usually the same day.

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This page covers a technique rather than a treatment, so no price sits with it. Cost depends on the defect, the anaesthetic used and the reviews needed. A written estimate is issued before the surgery date is confirmed.

Most are day case repairs, often under local anaesthetic. The recognised concerns are loss of part of a lobe, bleeding under the flap and lifting of the nostril rim, which is why the design is planned carefully beforehand.

On the lower nose a graft frequently heals as a visible patch, because that skin is thick and oily and hard to match. Moving local tissue keeps the colour, thickness and texture of the nose itself.

Bruising settles within a couple of weeks, but puffiness in the lobes commonly persists for months. That is the part patients find most surprising, and it usually improves steadily rather than suddenly.

Some difference between the two sides can remain, especially in the early months while the flap is firm. Most settles as scar tissue matures, and a small adjustment can be discussed once healing is complete.

Anyone with a large defect, a wound involving the nostril lining, or a nose with little movable skin after earlier surgery or radiotherapy. Continued smoking also counts strongly against a flap with two pivoting lobes.

The defect is measured against the nostril rim, the skin is tested for looseness, and the design is drawn directly on the nose. Alternatives are compared, smoking and medicines reviewed, and a written estimate is provided.

Related

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Seeing patients from across the city and beyond: read about the practice on the plastic surgeon in Surat page, or check what a written estimate covers on the costs and insurance page.

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