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Reduction Mammaplasty: What Cup Size Will I Be?

Marion Chan¹, Sarah Lonie¹, Sean Mackay²

¹Plastic Surgery Unit, Eastern Health, Melbourne, VIC, Australia.

Plastic and Reconstructive Surgery. Global Open

|October 19, 2019

Summary

Plastic surgeons can now predict breast tissue weight for reduction mammaplasty using a new method. This technique helps achieve desired cup sizes by correlating initial measurements with predicted tissue excision weight.

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Area of Science:

Plastic Surgery
Biomechanical Engineering
Surgical Planning

Background:

Accurate prediction of breast cup size post-reduction mammaplasty remains a significant challenge for plastic surgeons.
Existing methods lack precision in determining the necessary tissue excision for desired aesthetic outcomes.

Purpose of the Study:

To present a novel method for predicting the weight of breast tissue to be excised during reduction mammaplasty.
To establish a correlation between initial breast measurements, desired cup size, and the required tissue weight for excision.

Main Methods:

Breast tissue density was determined from surgical resection specimens.
Standard bra cup volumes were measured using modeling clay and water displacement on a mannequin.
Data were correlated to establish relationships between breast tissue volume, weight, and bra cup size.

Main Results:

The average breast tissue density was calculated to be 0.98 g/ml (SD = 0.05).
A consistent progression in bra cup volume was observed relative to both cup and band sizes.
A predictive table was developed to estimate the weight of tissue for excision based on desired cup size changes.

Conclusions:

The developed method aids plastic surgeons in accurately predicting tissue excision weight for achieving specific cup sizes in reduction mammaplasty.
The findings provide a valuable reference for breast volume assessment, potentially assisting in planning for breast implant procedures.