Penis fillers increase girth by adding volume to the shaft. They do not increase true penile length.
Longevity of penis enlargement surgery results
Are the results permanent?
Yes. Penis enlargement surgery provides lasting changes in flaccid length and girth.
Length and Girth
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Ligament release: Permanently increases flaccid length; erect length increase is typically marginal.
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Fat transfer: Adds lasting girth; minimal resorption over time.
Maintaining Results
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Avoid weight gain that may conceal shaft.
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Follow post-op advice including any recommended exercises.
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Healthy lifestyle supports optimal appearance.
Medical Conclusion
Surgical results are permanent when performed by an experienced Urologist.
Detailed overview:
https://moorgateandrology.co.uk/penis-enlargement-surgery/