Diastasis recti is a separation of the two vertical abdominal muscles along the midline, where the connective tissue between them has stretched and thinned; it leaves a belly that domes when you sit up and a pooch that training never flattens. It can be fixed: a mild separation narrows with guided physical therapy, and a gap that will not close is repaired surgically, almost always during a tummy tuck with muscle repair.
What Diastasis Recti Is
The rectus abdominis, the "six-pack" muscle, runs in two halves joined down the middle by a band of connective tissue, the linea alba. Pregnancy, or years of extra weight, stretches that band sideways until the halves drift apart. The muscles are usually healthy; the thinned sheet between them no longer holds the wall firm, so the abdomen pushes forward through the midline. The Cleveland Clinic reports that about six in ten women have some separation after childbirth and counts a gap wider than 2 centimeters, roughly two finger widths, as diastasis recti. If your bigger problem is the fold of loose skin over the wall, read about apron belly and loose skin after pregnancy; the two are treated in one operation.
Symptoms
The bulge is what most people notice: a rounded lower belly at a healthy weight, a ridge that rises down the midline when you sit up, or a soft, jelly-like gap at the navel when you tense. The rest follow from a core without an anchor: low back ache, difficulty lifting, poor posture, and leaking when you cough, because the abdominal wall and the pelvic floor share one pressure system.
How to Check for Diastasis Recti at Home
Physicians and physical therapists use the finger test.
- Lie on your back with your knees bent and your feet flat.
- Place your fingers flat across the midline just above the navel, fingertips toward your toes.
- Lift your head and shoulders slightly and feel for the muscle edges on either side.
- Count how many fingers fit in the gap, then repeat below and at the navel.
Two or more fingers, or a soft trench your fingertips sink into, points to a diastasis. It is a starting point; the finger test cannot tell a gap from a hernia at the navel, and an examination can.
Why It Happens
Pregnancy is the usual cause: the growing uterus presses the wall outward while pregnancy hormones soften connective tissue. Twins, a large baby, pregnancies close together and a small frame raise the load, and each pregnancy stretches a band that has already lost recoil. Large weight gain does the same work more slowly, and genetics sets the ceiling, which is why two sisters with the same pregnancies end up with different bellies.
Diastasis Recti in Men
Men get it too. Without a pregnancy the stretch comes from chronic pressure inside the abdomen: weight carried at the front for years, heavy lifting with the breath held, a persistent cough, or straining with constipation. In men the separation tends to sit above the navel and shows as a ridge rising down the center during a sit-up. The self-check and the treatment ladder are the same, usually with less skin to remove.
What Counts as Severe
In the classification hernia surgeons use, a gap under 3 centimeters is mild, 3 to 5 centimeters moderate, and more than 5 centimeters, about four fingers, severe; length matters too, since a separation from ribs to pubic bone behaves differently from one confined to the navel. Pictures of severe diastasis recti show a midline that bulges like a loaf on sitting up, a navel pushed out by a hernia, and skin that has lost its tone. A mild gap can narrow with therapy; a wide, long gap will not.
Exercises That Help and the Ones That Make It Worse
The right exercises work the deep core, the transverse abdominis and the pelvic floor, with slow movement and inward breathing: heel slides, bent-knee fall-outs and supported bridges, with a pelvic-floor physical therapist watching for doming. The wrong ones raise pressure against the weak midline: crunches, sit-ups, full planks, double leg lifts, and heavy lifting with the breath held. Each pushes the abdominal contents through the gap and can widen it, which is why the woman who trains hardest often has the most visible bulge. We leave the programme to the therapist who examines you.
When Physical Therapy Is Enough and When It Is Not
Therapy first, always. A gap of two to three fingers often narrows with a dedicated course of deep-core work, and function improves even when the width barely changes; give it at least six to twelve months after your last delivery.
What therapy cannot do is re-join tissue stretched past its elastic limit: the linea alba is a sheet, not a muscle, and it does not contract back to width. The signs are a gap still two or more fingers wide after a full course, a dome that still rises when you sit up, and a bulge that returns the moment you relax. From that point the only way to close the wall is to sew it closed, and because the skin over it is usually stretched as well, the repair is nearly always done through a tummy tuck.
What Happens If It Goes Untreated
Nothing dangerous, and nothing that improves past a point. The separation does not close once the tissue has stopped recoiling, so the bulge stays and can widen with each pregnancy and weight swing. The weak midline can let fat or bowel push through at the navel as an umbilical hernia, and the back and pelvic floor keep absorbing pressure the wall should share.
The Options
Tummy Tuck With Muscle Repair
This is the operation that repairs a diastasis, and the one most patients who ask about a mini actually need. Through a low incision hidden under a bikini bottom, Dr. Cat lifts the abdominal skin off the wall, exposes the edges of the rectus muscle from the ribs to the pubic bone, and sews them together along the midline with permanent internal sutures in a precise double-layer repair. The wall tightens like an internal corset and the dome disappears; she then removes the stretched skin below the navel and creates a natural "innie" belly button. The surgical detail is on our tummy tuck with muscle repair in Beverly Hills page, and our post on tummy tuck with muscle repair covers who needs the repair. Liposuction on its own does not touch a diastasis: it removes fat from outside the wall and leaves the gap behind it.
Why a Mini Tummy Tuck Cannot Repair It
A mini suits a narrow anatomy: loose skin below the navel only, tight skin above it, no real muscle separation. Its short incision reaches the lower abdomen alone, and a diastasis usually runs the full length of the midline, so the upper half of the gap would stay open. Our mini versus full tummy tuck comparison walks through the decision.
Hernia Repair in the Same Surgery
A diastasis and an umbilical hernia often arrive together: the same weak midline lets tissue through at the navel. Dr. Cat checks for one at the consultation and repairs it during the tummy tuck, in one anesthesia and one recovery. A tummy tuck is cosmetic and insurance does not cover it; a documented hernia repair is the one part an insurer sometimes reviews, and we will tell you whether that applies to you.
Diastasis Recti Before and After
Our diastasis recti surgery before and after photos sit in the tummy tuck gallery; study the side views, where a doming midline shows most, and how low the scar sits.
What Dr. Cat Looks For at the Consultation
A consultation is an examination first. Dr. Cat measures the width and length of the separation lying and sitting up, checks the navel for a hernia, judges how much skin can be removed, and asks about your family plans, because another pregnancy can stretch the repair. Then she gives you a straight answer: keep working with physical therapy, or repair it. Candidates are usually done having children, healthy, not smoking, and within about 10 to 15 pounds of a stable goal weight; if the breasts have changed too, ask about a mommy makeover. The consultation fee is $500, credited toward surgery; the discovery call is free.
Recovery in Brief
You walk the first night, most patients need only a few Tylenol, drains come out at one to two weeks, desk work resumes at about two weeks and general exercise at six; heavy core loading comes last, once Dr. Cat has checked the repair. The week-by-week detail is in our guide to tummy tuck recovery.
Cost in One Line
Dr. Cat's surgeon's fee for a full tummy tuck with muscle repair is $40,500 to $60,500; the operating room and anesthesia are quoted at your consultation; our tummy tuck cost guide explains what is in the quote and how financing works. Surgeon's fees are typical ranges: a more complex case can cost more, and your fee is set at your consultation and is final only in your written quote.
Frequently Asked Questions About Diastasis Recti
How do you fix a diastasis recti?
Guided deep-core physical therapy first, which narrows a mild gap. When the gap stays two or more fingers wide after a full course, the rectus muscles are sewn back together along the midline, almost always during a tummy tuck.
How do you know if you have diastasis recti?
Lie on your back with your knees bent, lift your head and shoulders slightly, and feel along the midline above and below the navel. Two or more finger widths, a soft trench, or a ridge that domes up the center are the signs.
Can I get a flat tummy with diastasis recti?
With a mild gap, often yes: deep-core therapy plus fat loss can flatten the profile. Once the connective tissue has stretched past its recoil, training cannot close it and the bulge stays; a flat tummy then comes from repairing the wall.
What happens if diastasis recti goes untreated?
It does not close on its own past a point, and it is not dangerous in itself. The bulge persists and can widen with future pregnancies or weight swings, the midline can develop an umbilical hernia, and back pain tends to continue.
Do crunches fix diastasis recti?
Often the opposite. Crunches, sit-ups and full planks push the abdominal contents forward through the weak midline and can widen the gap. A diastasis is trained with deep-core work that draws the wall inward, ideally with a physical therapist.
Is the muscle repair permanent, and what if I get pregnant afterward?
The repair is designed to last: the muscles are sutured together and scar tissue reinforces the line. A later pregnancy can stretch it and sometimes calls for a revision, so most patients wait until their family is complete; if you are unsure, Dr. Cat discusses the suture options with you.
Talk to Dr. Cat About Your Muscle Separation
If you have done the therapy and the gap is still there, the next step is a conversation. Start with a free discovery call, or call (310) 858-8808, and we will tell you whether a consultation makes sense. Before you visit, read the tummy tuck in Beverly Hills page and browse the tummy tuck before and after photos.
Medically reviewed by Dr. Cat Begovic, MD, FACS, board-certified plastic surgeon. Last reviewed September 2026.