This article compares the two approaches using the published evidence. If you are new to the topic, our plain-English guide to rib remodelling is a good starting point.
What is traditional rib removal?
Rib resection for waist narrowing is the older of the two operations. In a resection, the surgeon makes an incision over the lower ribs — historically a larger incision than modern remodelling access points — dissects through or detaches the overlying muscle, and removes a segment of one or more of the lower ribs, most often the floating ribs (ribs 11 and 12) and sometimes rib 10. The removed bone does not grow back; the waist narrows because the outward-flaring portion of the skeletal frame is no longer there.
The documented drawbacks of resection
Several drawbacks of resection are documented in the surgical literature:
- Larger incisions and more dissection. Removing a segment of bone requires direct surgical access, which generally means longer incisions, more muscle disruption and more visible scarring than the small access points (1–2 mm to about 2 cm) used in ultrasonic remodelling.
- Effects on lung and respiratory-muscle function. The lower ribs anchor muscles involved in breathing and trunk support, and the eleventh and twelfth ribs sit close to the diaphragm’s attachments. Effects of rib resection on lung and respiratory-muscle function have been documented in the literature, and this has long been one of the central concerns raised about removing rib segments for a purely aesthetic purpose.
- A higher historical complication burden. Because resection involves cutting completely through bone near the pleura (the lining of the lung), the risk of pleural injury is a recognised concern. In a systematic review published in a Sage journal covering approximately 549 patients across waist-narrowing techniques, there were 2 pneumothorax cases among approximately 104 resection patients, along with 2 cases of intercostal neuropathic pain across the reviewed cohort.
- Irreversibility. Removed bone cannot be restored. If the result is uneven or over-corrected, the options for revision are limited.
None of this means resection has no place in surgery — rib segments are removed for reconstructive and medical reasons in other contexts — but it explains why surgeons developed bone-preserving alternatives for waist reduction.
How is rib remodelling different?
Rib remodelling — sometimes described in the literature as “waist narrowing without removal of ribs” — is an established, published technique, documented in the peer-reviewed literature since 2021 through international case series, systematic reviews and a 2025 meta-analysis of 318 patients. It takes the opposite approach to the bone:
- The bone is preserved. A piezoelectric (ultrasonic) instrument creates a controlled monocortical fracture — a greenstick-type break of the outer cortex only — at planned points along the lower ribs (typically ribs 10–12; some techniques also mobilise ribs 8–9). The inner cortex and the periosteum remain intact.
- The ribs are reshaped inward. Once the outer cortex is weakened, each rib is bent toward the midline rather than cut out. The procedure is performed under general anaesthesia with real-time ultrasound guidance, through small access points, in roughly 45–60 minutes, as day surgery or with a one-night stay.
- The ribs consolidate in the new position. Over approximately 8–12 weeks, the fractured cortex heals with the rib held inward — in most protocols by a rigid corset worn about 23 hours a day (8 weeks minimum, sometimes up to 6 months), or in one published variant by small internal fixation plates. Consolidated bone is stable tissue, and the change is intended to be long-lasting.
Because the rib cage remains structurally complete, the muscle attachments to the ribs are preserved rather than detached, and the access points are small. The trade-off is that remodelling depends on bone healing in the desired position — which is why corset compliance matters, and why under-correction requiring a secondary procedure is a recognised outcome (up to 14% in one published series).
How do the outcomes compare?
Figures below are means and ranges from published studies; outcomes vary between individuals.
- Remodelling (pooled data). A 2025 meta-analysis in Aesthetic Plastic Surgery (Springer) covering 4 studies and 318 patients reported a mean waist reduction of 8.59 cm at 3 months (95% CI 6.92–10.27), satisfaction of 94.89/100, zero pneumothorax (0.00 per 100; 95% CI 0–0.66), zero infection, skin burns 0.57 per 100 and asymmetry 1.85 per 100 — the latter largely associated with corset non-compliance, a factor in the patient’s hands.
- Greenstick method. Kudzaev’s 2021 series in PRS Global Open of 93 patients found the subgroup with 6-month follow-up averaged about 8 cm of reduction, with 14% requiring a secondary procedure for insufficient correction.
- Across all techniques. The RBCP systematic review (11 studies, ~738 patients) documents reductions of 6–13 cm and stresses low methodological quality. The Sage review (~549 patients) reports reductions of 5–17 cm across techniques — the upper end reflecting aggressive variants, not typical results — plus the resection pneumothorax and nerve-pain cases noted above.
Put plainly: on the published numbers, remodelling achieves waist reductions in the same broad range as resection while preserving the ribs — and the pooled 2025 analysis of 318 remodelling patients recorded zero pneumothorax and zero infections. The safety signal is consistent at scale: across the largest global dataset of 2,351 cases, serious complications such as pneumothorax were rare, at just 0.17%. The more serious complications recorded in the older literature cluster around resection, the obsolete approach that remodelling was developed to replace. These studies are not direct head-to-head comparisons, so cross-technique conclusions should be read as context.
Why neither is “minor surgery”
It is tempting to read “small access points” and “day surgery” and conclude that remodelling is a trivial procedure. It is not, and neither is resection. Both are operations on the rib cage, millimetres from the pleura, performed under general anaesthesia administered by a specialist anaesthetist — and in Australia, performed exclusively by FRACS specialist plastic surgeons (Fellows of the Royal Australasian College of Surgeons in Plastic and Reconstructive Surgery) with specialist Medical Board registration, at accredited facilities. Both involve weeks of restricted activity — for remodelling, desk work at about 1–2 weeks, strenuous exercise and heavy lifting deferred for 6 weeks to 3 months, and a demanding corset protocol; details are on our recovery page. Both leave scars. Both can require revision surgery.
Rib remodelling is surgery, and all surgery carries risk. Possible complications include pneumothorax (collapsed lung), bleeding, infection, nerve injury and ongoing pain, asymmetry, scarring, and risks associated with general anaesthesia. Outcomes vary from person to person. Read our full risk information before considering this procedure.
For remodelling specifically, additional reported risks include seroma, skin burns from the ultrasonic device (~0.6%), asymmetry (~1.9%), under- or over-correction and revision, delayed union or non-union of the ribs, and DVT/PE. For resection, the historical record adds pleural injury and the irreversibility of removed bone. Read about the risks of rib remodelling before considering either pathway, and see the procedure page for a step-by-step description.
Whichever approach you research, the Australian pathway is the same: Australian regulations require a referral from your GP or another independent medical practitioner, at least two pre-operative consultations (including one in person with your surgeon), screening for body dysmorphic disorder, and a minimum 7-day cooling-off period after informed consent before surgery can be booked. Rib remodelling is not available to people under 18.
If a bone-preserving approach to waist reduction is what you have in mind, a specialist can review your rib anatomy and explain what modern remodelling can realistically achieve for you. Request a consultation to take the next step.
Frequently asked questions
Is rib remodelling just a marketing name for rib removal?
No. They are structurally different operations. Resection removes segments of bone permanently; remodelling fractures only the outer cortex of the rib, bends it inward and lets it heal intact. Remodelling is an established technique with its own peer-reviewed literature — international case series since 2021, systematic reviews and a 2025 meta-analysis — and one of its foundational papers is literally titled “waist narrowing without removal of ribs”.
Does rib remodelling give a smaller result than rib removal?
Not on the published figures. Pooled remodelling data report a mean 8.59 cm reduction at 3 months, and systematic reviews across all techniques document 6–13 cm (with 5–17 cm across the widest range, the top end from aggressive variants). Outcomes vary between individuals, and the studies are not direct comparisons.
Can remodelled ribs go back to their old position?
The ribs consolidate in the new inward position over roughly 8–12 weeks, held by a rigid corset (or internal plates in one technique), and the change is intended to be long-lasting. Consolidated bone is stable tissue; published follow-up currently runs to six months, with longer-term data accumulating.
Medical review: This article is general information only and does not replace a consultation with a specialist plastic surgeon. Rib remodelling carries risks — read them at /risks/. All surgery requires a GP referral, two consultations and a mandatory cooling-off period.
References
Pooled meta-analysis, Aesthetic Plastic Surgery (Springer), 2025: https://link.springer.com/article/10.1007/s00266-025-05240-w
Kudzaev greenstick method, PRS Global Open, 2021: https://journals.lww.com/prsgo/fulltext/2021/07000/waist_narrowing_without_removal_of_ribs.9.aspx
Systematic review, RBCP: https://www.rbcp.org.br/details/3632/
Systematic review, Sage: https://journals.sagepub.com/doi/full/10.1177/30499240261454421