Is the morpho-functional approach a surgical technique?

No. It is a method of assessment and decision-making: it defines how to study the abdominal wall and how to choose the tool, not a single operative maneuver.

How is it different from two specialists collaborating?

Collaboration between two perspectives is a sum; the morpho-functional approach is a synthesis: the two views coexist within the same assessment, at the moment the decision is made.

Which conditions is it relevant for?

Rectus diastasis, primary or recurrent hernias and incisional hernias, the aftermath of major weight loss, and incomplete results after previous surgery.

Does it also apply to an abdominal wall changed by pregnancy?

Yes. After pregnancy the wall can change in both form and function: looking at only one of the two leads to partial decisions. The assessment starts from symptoms and clinical examination, not from appearance.

Which investigations does a morpho-functional assessment require?

In most cases, the clinical consultation and an ultrasound of the abdominal wall, performed dynamically as well. CT is reserved for more complex defects or recurrences, when a precise map of the muscle planes is needed.

The Morpho-Functional Approach to the Abdominal Wall

Name: The morpho-functional approach to the abdominal wall
Creator: Dr. Federico Fiori

This approach does not come from a narrow subspecialty, but from working every day on both sides: general and abdominal wall surgery, and reconstructive plastic surgery. It is from this dual experience that my way of seeing the abdominal wall as a whole comes.

The morpho-functional approach treats the structure (function) and the appearance (form) of the abdominal wall together, because in the abdominal wall the two are the same structure seen from two points of view. It is not a technique, but a method of assessment and decision-making.

If you are in a hurry, in plain words

A protruding abdomen does not have a single cause. Under the skin there is fat, then the muscular wall, and inside it the bowel: the profile seen in the mirror is the sum of those layers, and establishing which of the three weighs most changes the whole plan.

That is why the consultation begins with a measurement rather than with a technique. How far apart the muscles are, whether a hernia sits alongside the diastasis, how much skin and how much fat are genuinely there, and which complaints can be attributed to the wall and which cannot.

The proposal follows from that reading, and it is not always surgical. In many cases rehabilitation comes first; in others the operation concerns the wall alone; in others again the skin as well. What cannot be done is to promise the same result to everyone: the wall differs, the person differs, and so does the plan.

Two stories that resemble each other

Consider two cases. The first: a woman, two pregnancies, a significant rectus diastasis. She undergoes a well-performed aesthetic procedure — the abdomen is flat again, the scar is neat. A year later the back pain returns, along with the feeling that something "gives way" when she lifts her child, and difficulty with sport. The appearance has improved; the function has not.

The second: a man with a recurrent umbilical hernia. The hernia is properly repaired, the mesh is well placed, the defect is closed. But no one has addressed the excess skin and fat weighing on that repair: the result is an abdomen the patient does not recognize as his own and — above all — a wall that continues to work poorly in biomechanical terms.

Two technically correct operations. Two incomplete results. In both cases the problem was not the execution: it was the scope of the question asked before operating.

The abdominal wall is not a container — it is an organ

We are used to thinking of the abdominal wall as a passive barrier: something that "holds in" the viscera and, when it breaks, needs patching. That view is convenient, but it is anatomically and functionally wrong.

The abdominal wall is a dynamic system involved in essential functions:

postural stability: the rectus, oblique and transversus abdominis muscles work in synergy with the pelvic floor and the diaphragm. When the linea alba gives way — as in diastasis — the whole system loses its anterior anchoring point;
breathing: the pressure interplay between chest and abdomen depends on the integrity of this wall;
continence and control of intra-abdominal pressure: coughing, straining, lifting a weight — every everyday act passes through this structure;
movement: there is no athletic movement, and almost no everyday movement, that does not go through the core.

If the wall is an organ with a function, then a defect in it — a hernia, an incisional hernia, a diastasis — is not a problem of form or function. It is, almost always, a problem of form and function, because in the abdominal wall the two are the same structure seen from two points of view.

Why two surgeries look at the same organ from opposite sides

Here lies a difficulty that has nothing to do with individual surgeons and everything to do with how medicine is organized.

General surgery addresses the structural defect: closing the hernia, reconstructing the linea alba, placing a mesh when needed. Its criterion of success is the strength of the repair.

Plastic surgery addresses the overlying tissues: excess skin, fat, contour. Its criterion of success is the harmony of the result.

Both perspectives are legitimate. The critical point is that the patient does not arrive divided in two: they arrive with a wall that has given way both in its deep structure and in its superficial tissues, because pregnancy, major weight changes and previous surgery act on every layer at once.

When the two views stay separate, you get the stories we began with: solid repairs beneath tissues that keep loading them badly, or elegant remodeling over structures that keep giving way.

What "morpho-functional" actually means

The morpho-functional approach is an answer to this problem. It is not a technique: it is a method of assessment and decision-making, which can be summed up in three principles.

1. The right question first, the technique second

The initial assessment does not start from "which operation should we do", but from "how does this wall work today, and how will it need to work tomorrow?" We study the structural defect (site, size, quality of the musculo-aponeurotic tissues), the morphological component (excess skin and fat, scarring) and the functional component (posture, symptoms, the person's daily and athletic activities). Only out of this complete picture does the indication emerge.

2. Every tool on the table, none of them by default

Minimally invasive surgery, robotics, open surgery, surgical remodeling of the soft tissues, non-surgical treatments: these are tools, not banners. The least invasive technique is not always the best; the most radical is not always necessary. The honesty of the method lies in choosing the tool to fit the problem — and in being able to do so, because all the tools belong to the same toolbox. In some cases the correct conclusion is that no operation is needed: that too is a recommendation, and it deserves to be stated as clearly as any other.

3. The result is measured on both levels, over time

An abdominal wall operation has succeeded if the repair is solid and the person regains an abdomen that feels like their own — in appearance, in posture, in movement, in daily life. Half a result is not a result: it is an operation still waiting for another one.

"Isn't it enough to have two specialists collaborate?"

One might object: isn't it enough to have two specialists work together, one for the structure and one for the surface tissues? Partly, yes — and multidisciplinary work is always preferable to isolated viewpoints. But collaboration between two perspectives remains a sum; the morpho-functional approach is a synthesis.

The difference shows at the moment of decision: when the choice of repair technique constrains what remodeling is possible (or the other way round), when the sequence of surgical stages has to be planned as a whole, when you have to decide what can be done in a single operation and what must wait — at those moments the two views have to coexist inside the same assessment, not communicate through a written report.

That is why I built my professional path on both sides — general and abdominal wall surgery (minimally invasive, robotic and open) and reconstructive plastic surgery of the soft tissues. Not to accumulate credentials, but because the clinical problem I have chosen to treat cannot be divided.

Who this approach is for

To anyone with an abdominal wall problem in which structure and morphology are intertwined — which is most real-world cases:

women with rectus diastasis after pregnancy, with or without an associated hernia, often with excess skin;
patients with hernias and incisional hernias, primary or recurrent, particularly after major abdominal surgery;
people who have lost a significant amount of weight, in whom soft-tissue remodeling cannot ignore the strength of the wall;
patients who have already had surgery, with incomplete results on one of the two levels.

What do the data say?

This way of working has been tested on a published series. In 94 patients operated on for rectus diastasis — median inter-rectus distance of 56 mm, associated umbilical hernia in 62.8% of cases — the complaints reported before surgery were back pain in 77.7%, a feeling of abdominal laxity in 74.5%, constipation in 68.1% and urinary incontinence in 44.7%. These figures move diastasis out of the cosmetic chapter: a non-physiological inter-rectus distance alters the function of the whole wall, which recent evidence regards as a genuine organ.

In the same study the choice of surgical route did not depend on the width of the diastasis but on the excess of skin and fatty tissue: a minimally invasive technique when there was none (27.7% of cases), lipoabdominoplasty with repair when it was marked (41.5%), a reduced variant when it was modest (30.9%). Major complications were concentrated in the open operations, and quality of life measured with EuraHS-QoL improved significantly in every domain at twelve months. It is the algorithm I still use: the question is not which technique I prefer, but which problem I am facing. (Hernia 2021 — DOI 10.1007/s10029-020-02252-0)

Why I write these things

This page is not a promise: it is an explanation. I believe an informed patient makes better choices — whatever they choose, and whoever they choose to do it with. It is the same conviction behind the book "Diastasi e dintorni", behind the public talks, behind the daily work of guiding patients, and behind the pages I devote to explaining individual conditions and techniques.

If only one idea were to remain from all of this, I would want it to be this: the abdominal wall is one — and whoever treats it should look at all of it. Everything else, techniques included, comes after.

Glossary of minimally invasive abdominal wall acronyms

MILA: minimally invasive lipoabdominoplasty

Frequently asked questions about the morpho-functional approach

Is the morpho-functional approach a surgical technique?: No. It is a method of assessment and decision-making: it defines how to study the abdominal wall and how to choose the tool, not a single operative maneuver.
How is it different from two specialists collaborating?: Collaboration between two perspectives is a sum; the morpho-functional approach is a synthesis: the two views coexist within the same assessment, at the moment the decision is made.
Does it mean surgery is always indicated?: No. In some cases the correct conclusion is that no operation is needed: that too is a recommendation, and it deserves to be stated as clearly as any other.
Which conditions is it relevant for?: Rectus diastasis, primary or recurrent hernias and incisional hernias, the aftermath of major weight loss, and incomplete results after previous surgery.
Does it also apply to an abdominal wall changed by pregnancy?: Yes. After pregnancy the wall can change in both form and function: looking at only one of the two leads to partial decisions. The assessment starts from symptoms and clinical examination, not from appearance.
Which investigations does a morpho-functional assessment require?: In most cases, the clinical consultation and an ultrasound of the abdominal wall, performed dynamically as well. CT is reserved for more complex defects or recurrences, when a precise map of the muscle planes is needed.

Last updated: 2026-08-20 · Content by Dr. Federico Fiori