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Capsular contracture and silicone gel: experimental study.

C M Raposo-do-Amaral, V Tiziani, M A Trevisan

    Aesthetic Plastic Surgery
    |January 1, 1992
    PubMed
    Summary
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    Silicone gel prosthesis characteristics like membrane thickness and implant volume did not significantly affect fibrous capsule contraction in Wistar rats. Further research is needed to understand fibrosis development in medical implants.

    Area of Science:

    • Biomaterials Science
    • Surgical Pathology
    • Medical Device Engineering

    Background:

    • Fibrous capsule contraction around medical implants, such as silicone gel prostheses, can lead to complications.
    • Understanding factors influencing this foreign body response is crucial for improving implant outcomes.

    Purpose of the Study:

    • To investigate the impact of silicone gel prosthesis membrane thickness and implant volume on fibrous capsule formation.
    • To determine if these physical characteristics influence the degree of fibrosis in Wistar rats.

    Main Methods:

    • Thirty silicone gel miniprostheses with varying membrane thicknesses and volumes were implanted subcutaneously in Wistar rats.
    • After 180 days, fibrous capsules were resected and analyzed histologically for fibrosis grade.

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    Main Results:

    • Histological analysis revealed varying degrees of fibrosis among the implanted prostheses.
    • Statistical analysis showed no significant correlation between prosthesis membrane thickness and fibrosis grade.
    • Implant volume also did not demonstrate a significant impact on the development of fibrous capsule fibrosis.

    Conclusions:

    • The membrane thickness and volume of silicone gel prostheses do not appear to be significant factors in modulating the host's foreign body response, specifically fibrosis.
    • Further studies are warranted to explore other potential contributors to fibrous capsule contraction and fibrosis around silicone implants.