Diastasis Recti Surgery in Singapore
Diastasis Recti Abdominis, sometimes referred to as "mummy tummy" when it persists post-pregnancy, is the structural separation of the two vertical rectus abdominis muscles along the midline tissue known as the linea alba. Often called abdominal muscle separation or rectus diastasis, this condition alters both the function and appearance of the core. Argent Plastic Surgery offers diastasis recti repair in Singapore, performed by Dr Lee Hanjing, a fellowship-trained specialist plastic surgeon, at Mount Alvernia Hospital.
Understanding Diastasis Recti (Divarication of the Recti)
Diastasis recti, also referred to as abdominal muscle separation, is a structural change in the front of the abdominal wall. This wall is governed by four distinct muscle groups. Among them are the two central vertical muscles, the rectus abdominis, which run from the sternum to the pubic bone and produce the traditional "six-pack" profile.
Connecting these two muscle pathways is a band of connective tissue called the linea alba. It serves as a central anchor point for the abdominal muscles, stabilising the torso and absorbing pressures exerted by internal organs. Under normal conditions, the width of the linea alba spans up to 2cm just above the umbilicus (belly button).
When the linea alba stretches beyond this range, the two rectus muscles separate. The separation often becomes visible as coning or doming along the midline when the core is engaged, such as during sit-ups, lifting, or other activities that increase intra-abdominal pressure.
What Causes Diastasis Recti?
Several factors contribute to the stretching and thinning of the linea alba, including:
- Pregnancy and Hormonal Changes: As the uterus expands, it exerts immense outward pressure on the abdominal wall. Simultaneously, the body produces higher levels of the hormone relaxin, which naturally softens connective tissues to facilitate birth but directly contributes to the widening of the linea alba.
- Multiple or Large Pregnancies: Carrying multiples (twins or triplets), larger babies, or closely spaced pregnancies can heighten the degree of separation.
- Weight Fluctuations or Obesity: Chronic abdominal pressure from significant weight gain stretches the abdominal wall over time.
- Improper Heavy Lifting or Core Overuse: Repetitive strain without proper support, including poorly performed core exercises, may worsen separation.
For many women, the cause may be a combination of these factors rather than a single one, and the resulting changes are a normal response of the body, not a failure of it.
How Severe Is Your Diastasis Recti? (Classification)
To guide clinical decision-making, the severity of abdominal separation is classified systematically. While milder cases often resolve or improve with conservative therapies, more pronounced separations frequently require surgical intervention to restore core integrity:
| Severity Classification | Type A | Type B | Type C | Type D |
| Description | Mild | Moderate | Severe | Very Severe |
| Width of Separation | 2-3cm | 3-5cm | 5-7cm | 7-9cm |
The width can be measured in several ways, starting with finger palpation during examination and supported by callipers or ultrasound, where greater accuracy is helpful. A CT scan or intraoperative measurement is used when a more definitive figure is needed.
Symptoms of Diastasis Recti
A weakened or overstretched linea alba can compromise the structural baseline of the torso, giving rise to a combination of aesthetic changes and functional difficulties:
- Visible Midline Bulge: A persistent bulge or ridge along the centre of the abdomen at rest, sometimes presenting as the rounded "mummy tummy" that remains after pregnancy, and occasionally accompanied by an umbilical hernia.
- Coning or Doming When Engaging the Core: A tent-like protrusion or rounded bulge along the midline that becomes visible during sit-ups, lifting, or core exercises.
- Core Weakness and Postural Instability: Reduced trunk strength that affects exercise tolerance, lifting, posture, and overall stability, which often presents after pregnancy.
- Lower Back, Hip, or Pelvic Pain: Reduced abdominal support shifts the load onto surrounding muscle groups, often producing pain in the lower back, hips, or pelvic region.
- Pelvic Floor and Gastrointestinal Symptoms: Compromised core support can contribute to urinary incontinence, pelvic instability, bloating, and constipation.
While these changes are not a medical emergency, the way they shape daily life can be considerable, particularly for women living with postpartum diastasis recti in the months and years following pregnancy.
Surgical Repair of Diastasis Recti (Abdominoplasty with Rectus Plication)
Surgical correction of diastasis recti, medically referred to as rectus divarication repair, divarication surgery, or rectus abdominis diastasis repair, is designed to reconstruct core stability and restore a contoured abdominal profile, addressing the functional and aesthetic concerns that commonly arise after pregnancy or significant weight loss.
For moderate-to-severe cases, particularly when accompanied by functional symptoms or excess abdominal skin, abdominoplasty for diastasis recti offers the most definitive correction.
The procedure is performed under general anaesthesia and typically includes the following steps:
- Rectus Plication (Linea Alba Repair): The separated rectus abdominis muscles are sutured back together at the midline using permanent or long-lasting sutures, restoring the linea alba and re-establishing core support.
- Concurrent Umbilical Hernia Repair: If a hernia is present at the umbilicus, it is repaired during the same procedure without the need for a separate operation.
- Excess Skin Removal: Stretched skin and stretch marks across the lower abdomen are removed, particularly in cases involving significant skin laxity after pregnancy or weight loss.
- Progressive Tension Sutures: Internal sutures are placed to secure the skin flap to the underlying muscle layer, thereby reducing the risk of seroma formation after surgery.
- Liposuction Where Appropriate: Liposuction may be performed at the same setting to refine the contour along the flanks and upper abdomen.
For individuals who present with significant muscle separation but possess minimal skin laxity, a mini-abdominoplasty may be considered. This involves a shorter incision and addresses muscle separation in the lower abdomen, with less skin removal than a full abdominoplasty.
Medisave and Insurance Coverage for Diastasis Recti Repair
In Singapore, insurance providers or Medisave may cover a portion of the costs associated with diastasis recti repair if the condition results in documented functional impairment rather than purely aesthetic concerns. Insurance approval is typically evaluated based on specific medical criteria:
- Significant Functional Discomfort: Persistent lower back, pelvic, or core pain that interferes with daily function and has not responded to conservative management.
- Pelvic Floor Dysfunction: Symptoms such as urinary incontinence or pelvic instability that are linked to compromised abdominal wall.
- A Co-existing Umbilical or Ventral Hernia: A hernia along the midline that requires concurrent, medically essential surgical repair.
- Documented Conservative Management Failure: Evidence that supervised physiotherapy and other conservative approaches have been attempted without sufficient improvement or sufficient resolution of the functional deficits.
Where the concern is purely cosmetic, and skin laxity alone is being addressed, insurance coverage does not apply. Additionally, because the cost of a diastasis recti repair varies depending on the scope of surgery, we walk through it carefully during your consultation.
Eligibility is determined on an individual basis, and patients are encouraged to check directly with their insurer about the specific terms of their plan. Learn more about the insurance partners we work with for reconstructive and medically necessary procedures.
Who Is a Suitable Candidate for Diastasis Recti Surgery?
Ideal candidates for diastasis recti surgery typically:
- Have Completed Conservative Protocols: Pursued a supervised core-strengthening or physiotherapy regimen for at least three to six months without adequate functional improvement.
- Demonstrate Marked Separation: Present with a pronounced muscle gap that remains structurally unaltered by exercise, particularly within the Type B, C, or D classifications.
- Have Completed Family Planning: Have decided not to have future pregnancies, as subsequent gestations will re-stretch the abdominal wall and compromise the surgical repair.
- Maintain Good Health: Are in stable physical health, maintain a stable weight, and approach the procedure with realistic, well-informed goals.
Dr Lee Hanjing assesses and classifies severity during consultation, and discusses whether surgical repair is appropriate for your individual situation. A consultation does not commit you to surgery. It clarifies whether surgery is the appropriate answer.
What to Expect at Your Consultation
A consultation at Argent Plastic Surgery covers the clinical, functional, and practical considerations needed to decide whether surgery is appropriate, so each patient leaves with a clearer understanding of their options. A visit will encompass:
- Clinical Assessment of Severity: Dr Lee Hanjing evaluates the width and depth of the rectus separation using finger palpation. When necessary, an ultrasound is used to accurately classify the tissue structure.
- Review of Symptoms and Functional Impact: Functional symptoms such as core weakness, postural pain, and pelvic floor concerns are reviewed alongside aesthetic concerns to establish a fuller clinical picture.
- Discussion of Surgical and Conservative Pathways: If conservative protocols have not yet been fully explored, a structured non-surgical pathway will be outlined. If surgery is indicated, the specific surgical techniques, timing, and recovery phase will be explained in detail.
- Scar Placement and Recovery Planning: The likely scar position, expected recovery timeline, and considerations specific to your anatomy are reviewed so you can make an informed decision.