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THE TREATMENT REGISTRY
Patient journey

Post-pregnancy or post-weight-loss abdominal laxity

By The Treatment Registry editors

Loose abdominal skin and rectus muscle separation (diastasis recti) are common after significant weight loss or pregnancy. The choice between conservative rehabilitation and surgical intervention depends on the severity of the laxity, the presence of muscle separation, and whether the patient has completed family planning. Pregnancy after abdominoplasty typically reverses the surgical result.

Clinical overview

Signs and symptoms

A diastasis recti may appear as a ridge running down the midline of the abdomen, anywhere from the xiphoid process to the umbilicus. It becomes more prominent with straining and may disappear when the abdominal muscles are relaxed, and the medial borders of the two halves of the rectus abdominis can be palpated during contraction. Beyond the abdominal bulge it can be associated with a range of painful symptoms and complications, including urinary incontinence (leaking), pelvic pain, pain with sex, prolapse, low back pain, pelvic floor dysfunction and umbilical hernia. The condition itself has no associated morbidity or mortality.

Causes and risk factors

The separation arises from stretching of the linea alba, the connective collagen sheath formed by the aponeurosis insertions of the transverse abdominis, internal oblique and external oblique muscles; this stretching increases the distance between the right and left rectus abdominis muscles. Loose abdominal skin and rectus muscle separation of this kind are common after significant weight loss or pregnancy.

How it is diagnosed

Diastasis recti is diagnosed by physical examination, measuring the distance between the rectus abdominis muscles at rest and during contraction at several levels along the linea alba; it is defined as a gap of about 2.7 cm or greater. Examination is typically performed with the subject lying on the back, knees bent at 90 degrees with feet flat and the head slightly lifted with the chin on the chest; with the muscles tensed the examiner places fingers in the presenting ridge, and a separation of two fingertips (approximately 1.5 cm) or more is the determining factor. Abdominal ultrasonography provides objective evidence and confirms that the bulge is not a hernia, and a CT scan may also visualise it; the condition must be differentiated from an epigastric or incisional hernia.

Clinical overview sourced from encyclopaedic medical reference; see sources below. General information only — not a substitute for individual clinical assessment.

Treatment ladder

Conservative options are first-line where appropriate; surgical options are typically reserved for cases where lower-tier options are unsuitable or have failed. Decisions are individual and depend on clinical assessment.

Conservative

  • Targeted physiotherapy

    Diastasis-specific rehabilitation with a women's-health physiotherapist. Effective for many cases of mild to moderate diastasis recti when the skin envelope is healthy. First-line option in postpartum recovery.

  • Weight stabilisation

    Achieving a stable body weight before considering surgery; pre-operative weight stability for at least six months is a near-universal recommendation.

Procedural

  • Mini-abdominoplasty

    Limited skin and fat resection below the umbilicus, with or without lower-abdominal muscle plication. Suitable for patients with localised lower-abdominal laxity and good upper-abdominal tone.

Surgical

  • Abdominoplasty (full) · View procedure page

    Resection of excess skin and fat from umbilicus to pubis with rectus plication. Definitive treatment for significant skin laxity and diastasis. Substantial DVT/PE risk requires careful perioperative management.

  • Extended abdominoplasty (post-massive-weight-loss)

    Wider resection with possible flank extension; commonly performed after substantial bariatric weight loss. Higher complication rate than primary abdominoplasty.

Related procedures

Sources

  1. [1]ASPS — Quality and Health Policy practice parameters — plasticsurgery.org(accessed 2026-05-09)
  2. [2]Wikipedia — Diastasis recti — en.wikipedia.org(accessed 2026-07-24)
  3. [3]NICE NG157 — Joint replacement (primary): hip, knee and shoulder — nice.org.uk(accessed 2026-05-09)
  4. [4]NICE NG89 — Venous thromboembolism in over 16s: reducing the risk of hospital-acquired DVT and PE — nice.org.uk(accessed 2026-05-09)

Sources marked “on file” are held by The Treatment Registry but are not publicly accessible.