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Related Experiment Video

Updated: Nov 2, 2025

Translaminar Autonomous System Model for the Modulation of Intraocular and Intracranial Pressure in Human Donor Posterior Segments
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Relation Between Post-Augmentation Parenchymal Atrophy and Local Tissue Pressure.

João Pontello1, Ana Claudia Roxo1, Maria Lidia Abreu1

  • 1Division of Plastic Surgery, Rio de Janeiro State University, Rio de Janeiro, Brazil.

Aesthetic Surgery Journal
|June 7, 2021
PubMed
Summary
This summary is machine-generated.

Breast implant insertion causes significant glandular volume reduction, with larger implants exerting more pressure and leading to greater atrophy. This study quantifies the relationship between implant pressure and breast tissue volume changes over time.

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Area of Science:

  • Plastic Surgery
  • Biomedical Engineering
  • Radiology

Background:

  • Breast implants dynamically interact with breast parenchyma, potentially causing local atrophy, sensory changes, and volume reduction.
  • The relationship between implant size, pressure, and parenchymal atrophy is not fully understood.
  • Previous assumptions about inverse proportionality between pressure and volume require further investigation.

Purpose of the Study:

  • To assess and quantify breast parenchyma volume changes in response to varying pressure levels from silicone implants of different sizes.
  • To investigate the correlation between implant-exerted pressure and the degree of breast tissue atrophy.

Main Methods:

  • Thirty-six women underwent augmentation mammoplasty in the subglandular plane, divided into three groups of 12.
  • Pressure measurements were taken using molds mirroring implant dimensions.
  • Magnetic Resonance Imaging (MRI) was performed preoperatively and at 6 and 12 months post-surgery.

Main Results:

  • A significant mean glandular volume reduction of approximately 12.97% (right breast) and 12.42% (left breast) was observed 12 months after implant insertion.
  • Statistically significant differences were found in volume reduction proportions correlating with measured pressure levels.
  • Higher pressure levels were associated with greater parenchymal volume reduction.

Conclusions:

  • Breast implant insertion leads to a verifiable reduction in breast volume.
  • The extent of breast volume reduction is directly related to the pressure exerted by the implant.
  • This study provides quantitative evidence linking implant pressure to parenchymal atrophy.