Indications and Contraindications for Minimally Invasive Rib Remodeling

Background: A narrow waist is one of the central objectives of esthetic body contouring, and it is closely tied to the waist-to-hip ratio that observers associate with a feminine silhouette. Conventional soft-tissue techniques such as liposuction and liposculpture are constrained by patient-specific anatomy, including the pattern of adipose tissue distribution and the transverse dimensions of the bony rib cage. Minimally invasive rib remodeling was developed to overcome these constraints and to produce a more pronounced waist-narrowing effect without rib removal. The factors that determine the magnitude of the result and patient satisfaction have not been characterized in sufficient detail. Methods: A combined retrospective–prospective single-center study was conducted on 60 female patients aged 22 to 55 years (mean age, 35.5 years) who underwent minimally invasive rib remodeling using the Kudzaev technique between 2017 and 2025. The variables assessed included anthropometric measurements, body mass index (BMI), subcutaneous and visceral adipose distribution, body shape, endocrine status, and psychological readiness to adhere to the postoperative regimen. Outcomes were evaluated at three months on the basis of the change in waist circumference, standardized photographic documentation, and patient satisfaction (five-point scale) and the BODY-Q Satisfaction with body scale. Safety was assessed clinically during the first postoperative day and at every follow-up contact, and union of the osteotomies was assessed by computed tomography at three months. Results: The mean reduction in waist circumference was 7.82 ± 2.14 cm. Both the reduction and patient satisfaction decreased with increasing BMI (Pearson r = −0.30, p = 0.02 and r = −0.42, p < 0.001 respectively): patients with a BMI ≤ 25 kg/m2 (n = 59) achieved a mean reduction of 7.86 ± 2.12 cm and a satisfaction score of 4.25 ± 0.96, whereas the single patient with a BMI > 25 kg/m2 obtained a smaller reduction (5 cm) and the lowest satisfaction score. The BODY-Q Satisfaction with body scale corroborated these results (Rasch-transformed score, 82.6 ± 18.1) and correlated strongly with the five-point rating (Pearson r = 0.90). Elevated BMI and a pronounced visceral fat component were associated with a less favorable esthetic outcome. Endocrine disease, in particular hyperparathyroidism, was associated with delayed rib consolidation and lower satisfaction. Poor postoperative compliance, especially inconsistent corset wear, was linked to unsatisfactory results. No pulmonary, pleural or infectious complications occurred. Access by needle puncture left no scars, analgesic use lasted two to four days, and computed tomography at three months showed consolidation in 58 of the 60 patients. No patient reported loss of the achieved narrowing during subsequent contact. Conclusions: The effectiveness of minimally invasive rib remodeling depends substantially on patient selection. The most favorable outcomes were obtained in patients with a normal BMI, minimal adipose tissue, and a high level of compliance. Elevated BMI, excess visceral fat, parathyroid disease and low motivation were each associated with a smaller effect and lower satisfaction, and identify patients in whom the procedure is less likely to satisfy. These findings support rigorous preoperative selection that accounts for both somatic and behavioral characteristics.