Do you lose length after prostate surgery?

Do Men Lose Length After Prostate Surgery?

It’s a question many men hesitate to ask but deeply want answered: Can prostate surgery affect penis size? The reality is, for some men, the answer is yes—though the changes are typically modest and vary from person to person.

A study by Munding and colleagues followed 31 men who underwent prostate surgery and measured penile length in the stretched flaccid state—a reliable proxy for erect length. The results showed that 71% of participants experienced some degree of shortening post-surgery. Nearly half—about 48%—noticed a loss greater than 1 centimeter, with the total range of shortening falling between 0.5 and 4 cm.

It’s important to clarify that this doesn’t mean the penis is “damaged” or permanently altered in a dramatic way for most men. The perceived loss often relates to changes in tissue healing, reduced blood flow during recovery, or retraction due to scar tissue formation near the surgical site. In many cases, what feels like significant shrinkage may also be influenced by postoperative swelling or weight gain, rather than actual structural loss.

Still, the psychological impact can be real. For men already navigating recovery and potential side effects like incontinence or erectile dysfunction, even a small change in length can affect self-image and confidence.

Doctors now recognize this concern and often discuss it proactively before surgery. Techniques like early penile rehabilitation, including the use of vacuum devices or medications to support blood flow, may help reduce the risk of shortening. Open, honest conversations with a urologist before and after surgery can make a meaningful difference in managing expectations and outcomes.

While penile length changes after prostate surgery aren’t universal, they’re not rare either. Being informed helps men prepare—not with fear, but with realistic understanding and the tools to support their recovery.