Breast ptosis (Mastoptosis) is a physiological transformation resulting from various factors, including aging, pregnancy, lactation, weight fluctuations, genetics, and gravity. This condition is characterized by the stretching of the skin and the weakening of the suspensory Cooper’s ligaments, leading to the descent of mammary tissue and the nipple-areola complex below their anatomical norm. In planning surgical interventions such as mastopexy or augmentation mastopexy, surgeons must utilize standardized international classification systems to evaluate the severity and select the optimal surgical technique for each patient
1. Standard Classification via the Regnault System
The classification system developed by Dr. Paul Regnault (1976) serves as the primary standard for plastic surgeons globally in evaluating the degree of ptosis. This system utilizes the position of the Nipple-Areola Complex (NAC) relative to the Inframammary Fold (IMF) as the defining criterion:
Grade 1 (Mild Ptosis): The nipple is at the level of the IMF or no more than 1 cm below it, remaining superior to the lower breast parenchyma.
Grade 2 (Moderate Ptosis): The nipple is positioned 1–3 cm below the IMF but remains above the lowest point of the breast.
Grade 3 (Severe Ptosis): The nipple is more than 3 cm below the IMF and constitutes the lowest point of the breast, often oriented downward.
Pseudoptosis: A condition where the nipple remains above the IMF, yet the lower breast tissue descends below the fold, typically occurring after significant loss of volume from lactation or rapid weight reduction. While nipple position is a critical variable, clinical planning at PPSI incorporates additional factors to ensure optimal outcomes, including tissue quality, skin elasticity, and pre-existing breast volume. These evaluations allow surgeons to determine the appropriate incision pattern—such as periareolar incisions for mild cases or anchor-shaped (inverted-T) incisions for severe cases with extensive skin redundancy—to restore the nipple to a functional and aesthetically pleasing position
2. Anthropometric Methodology
Beyond qualitative observation, surgeons employ precise anthropometric measurements to design the surgical plan
• Key metrics include the Suprasternal Notch-to-Nipple (SSN-N): distance and the Nipple-to-Inframammary Fold (N-IMF) distance, measured both at rest and under maximum tension.
• If the N-IMF: distance under tension is less than 10 cm, breast augmentation alone may be considered sufficient.
• Furthermore, Skin Stretch and Pinch Tests: are conducted to evaluate skin elasticity and the adequacy of tissue coverage for the placement of breast implants.
3. Correlation Between Ptosis Grade and Surgical Techniques
The degree of ptosis fundamentally dictates the surgical technique and the resulting incision pattern.
• Mild Ptosis (Grade 1): is typically addressed using a periareolar or "Donut Lift" technique, which minimizes scarring.
• Moderate Ptosis (Grade 2): generally requires a vertical or "Lollipop Lift" to reposition tissue and enhance the breast's projection and shape.
• Severe Ptosis (Grade 3): necessitates an Inverted-T or "Wise Pattern" (Anchor) incision to excise significant skin excess and achieve balanced nipple repositioning.
Contemporary advancements have introduced 3D Stereophotogrammetry to analyze breast curvature and volume, offering a 13% increase in classification precision over traditional 2D methods. Utilizing the Regnault and Anthropometric systems enables surgeons to accurately assess surgical complexity and tailor techniques to the patient's specific tissue characteristics. A mutual understanding between the surgeon and patient regarding the degree of ptosis, expected outcomes, and the resulting scars is essential for reducing revision rates and achieving maximum long-term patient satisfaction.
