Fleur-de-Lis Abdominoplasty — Massive Weight Loss

Fleur-de-lis abdominoplasty combines a standard horizontal low-transverse incision with a vertical midline incision, creating a T-shaped scar pattern. It is a specialised operation indicated almost exclusively in patients with massive weight loss (MWL), where vertical skin redundancy cannot be corrected by horizontal excision alone. This guide covers indications, the T-junction vascular compromise that defines its technical difficulty, and how closure and complication management differ from standard abdominoplasty.

Who is a candidate?

Fleur-de-lis is indicated when skin excess is significant in both horizontal and vertical axes. Typical candidates:

• Post-bariatric patients with >40 kg weight loss — particularly after gastric bypass, sleeve gastrectomy or gastric banding — where skin has failed to retract in either axis
• Massive weight loss through lifestyle change (40+ kg) with similar dual-axis redundancy
• Patients with a pre-existing vertical midline scar from prior abdominal surgery where the vertical component is "free" — adding the horizontal component completes a fleur-de-lis

Fleur-de-lis is not an alternative to standard abdominoplasty for patients with modest laxity. The vertical scar is a significant aesthetic trade-off that must be justified by a clinical indication. Patients who could be adequately treated by standard or extended abdominoplasty should not undergo fleur-de-lis.

Pre-operative planning

The vertical component is planned with the patient standing, marking the full vertical excess with the "pinch test". The horizontal component is then added in the standard fashion. The resulting T-pattern has three critical measurements:

• Vertical excess: the amount of tissue to be excised between the two vertical limbs — typically 8–15 cm at the widest supra-umbilical level
• Horizontal excess: planned as for a standard abdominoplasty (hip-to-hip excision)
• T-junction position: ideally sits at or just above the horizontal incision — the vertical excision tapers down to a point at the junction

The T-junction problem

At the T-junction, three tissue edges meet: the two vertical flap edges and the horizontal superior flap edge. The vascular supply at this three-way corner is inherently compromised because each edge has travelled through the undermining of adjacent tissue and lost part of its perforator supply. This is why the T-junction is the most common site of:

• Wound dehiscence
• Partial skin necrosis
• Delayed healing
• Post-healing hypertrophic scarring

Closure strategy

Closure proceeds in a specific sequence:

1. Rectus diastasis plication first, two layers, xiphoid-to-pubis
2. Progressive-tension sutures placed throughout the undermined territory
3. Scarpa fascia closed with interrupted absorbable sutures — the vertical component and horizontal component each sequentially
4. Deep dermal layer closed in the same sequence — vertical first, horizontal second, and the T-junction closed last with a three-point suture that brings all three edges together without tension
5. Subcuticular continuous skin closure with interrupted reinforcing sutures at the vertex

Drain management

Drains are always used in fleur-de-lis abdominoplasty — this is not a procedure where drain omission is appropriate. Typically 2–4 closed-suction drains are placed, with the drain duration tending towards the longer end of the range (10–21 days) given the larger undermined surface area and higher seroma risk in this population.

Typical outcomes & complication profile

Scar expectations

Fleur-de-lis patients must understand that the vertical scar is permanent and visible — it is the trade-off for the result. The horizontal scar sits within underwear/swimwear as in standard abdominoplasty; the vertical scar will be visible whenever the lower abdomen is uncovered. Scar quality varies with skin type, genetic healing response and post-operative scar care. In appropriately selected MWL patients, the before-after transformation justifies the scar — but this is an individual assessment at consultation.

Vertical limb design — geometry of the T

The vertical component of fleur-de-lis is geometrically more demanding than the horizontal. Several design decisions determine both shape outcome and T-junction safety:

Width of vertical excision

• Pinch test with patient standing — both lateral edges of the vertical wedge are marked while the patient holds the maximum tolerable pinch
• Conservative on the day — better to under-excise vertically and revise minor laxity 12 months later than to over-excise and produce T-junction necrosis
• Typical width at the supra-umbilical level: 8–15 cm for severe MWL; less for moderate cases

Superior limb position

• The vertical incision terminates superiorly at the inframammary fold or just below — extending higher creates an unconcealable upper abdominal scar
• In patients with concurrent breast surgery, coordinating the inframammary fold position is critical — the FDL apex should not collide with the IMF incision

Inferior tapering to the T-junction

• The vertical wedge tapers from its widest supra-umbilical point to a single point at the horizontal incision
• Zero tension at the apex is the design goal — achieved by progressive narrowing of the wedge over the lower 8–10 cm
• Avoid sharp angulation of the apex — a smooth, slightly curved transition reduces stress concentration at the suture line

Vertical scar trade-off discussion

• The vertical scar is permanently visible regardless of skin type or scar care quality
• Most MWL patients accept this trade-off after preoperative photography review with similar prior cases
• Patients unable to accept the vertical scar are not fleur-de-lis candidates regardless of the apparent indication

Hidden T-junction — 'modified fleur-de-lis' approaches

Several modifications attempt to reduce the visibility or vascular vulnerability of the T-junction:

Inverted-T modification

• The vertical limb terminates above the horizontal incision rather than meeting it at a point
• Eliminates the three-way vascular compromise but sacrifices some vertical excision
• Useful when vertical excess is moderate and T-junction risk concerns dominate

Curved transition modification

• The vertical and horizontal incisions meet in a curved transition rather than a sharp T
• Distributes tension over a larger arc
• Trade-off: slightly more visible junction, moderate reduction in necrosis risk

Staged vertical-then-horizontal approach

• In selected very high-risk MWL patients, the vertical component is performed as a separate operation 6+ months before the horizontal abdominoplasty
• The vertical scar matures and revascularises before the horizontal undermining
• Significantly reduces T-junction necrosis risk
• Trade-offs: two operations, two recoveries, longer overall time to final result

Reverse abdominoplasty + fleur-de-lis in MWL patients with breast surgery

• The upper-abdominal redundancy is addressed via inframammary incision (reverse abdominoplasty)
• This can be combined with vertical fleur-de-lis below, creating a Y-pattern that avoids the classic T-junction
• Particularly useful when concurrent breast lift / augmentation-mastopexy is planned

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