Nerve Repair for Erectile Dysfunction After Radical Prostatectomy: A Systematic Review of Outcomes

Area of Science:

• Urology
• Regenerative Medicine
• Nerve Repair

Background:

• Erectile dysfunction (ED) is a common complication following radical prostatectomy (RP), often caused by cavernous nerve damage.
• Nerve grafting is explored to restore erectile function post-RP, but clinical outcomes are variable.
• Existing randomized controlled trials on nerve grafting for post-prostatectomy ED have produced inconclusive results.

Purpose of the Study:

• To evaluate the effectiveness of various nerve grafting techniques for managing ED after radical prostatectomy.
• To synthesize current evidence on nerve grafting outcomes in patients who have undergone RP.

Main Methods:

• A systematic literature search was performed across PubMed, MEDLINE, and Embase databases.
• Included studies focused on human subjects undergoing unilateral or bilateral nerve grafting using autologous donor nerves.
• Seventeen studies met the inclusion criteria from an initial pool of 239 publications.

Main Results:

• Bilateral sural nerve grafting yielded the highest recovery rates, with up to 71% of patients achieving functional erectile recovery.
• Adjunctive therapies, such as sildenafil, were often used to improve outcomes.
• Randomized controlled trials did not demonstrate statistically significant improvements compared to control groups, indicating uncertainty in efficacy.

Conclusions:

• While bilateral sural nerve grafting shows potential, its overall efficacy for post-prostatectomy ED remains uncertain due to inconsistent results and study limitations.
• Factors like donor nerve selection, surgical skill, and patient characteristics influence outcomes.
• Larger, standardized clinical trials are necessary to definitively establish the role of nerve grafting in ED management after RP.