Impact of Retzius-sparing Versus Standard Robotic-assisted Radical Prostatectomy on Penile Shortening, Peyronie's Disease, and Inguinal Hernia Sequelae.

BACKGROUND

Retzius-sparing robotic-assisted radical prostatectomy (RS-RARP) has improved urinary function compared with standard robotic-assisted radical prostatectomy (S-RARP). As RS-RARP spares the dorsal vascular complex, pelvic fascia, and anterior abdominal fascia, it may also lower the incidence of "neglected" postprostatectomy sequelae such as penile shortening, Peyronie's disease, and inguinal hernias.

OBJECTIVE

To determine whether there are patient-perceived differences in penile shortening, Peyronie's disease, and inguinal hernia rates among men undergoing RS-RARP versus S-RARP.

DESIGN SETTING AND PARTICIPANTS

Researchers uninvolved in clinical care and blinded to surgical approach surveyed 60 RS-RARP versus 57 S-RARP men with validated patient-reported items to assess penile shortening, Peyronie's disease, and inguinal hernia sequelae following surgery.

INTERVENTION

RS-RARP versus S-RARP.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS

Univariate differences between the two cohorts were analyzed using Student test. Logistic regression was used to analyze variables associated with postoperative penile shortening. Cox proportional hazards models were used to assess the risk of developing Peyronie's disease and inguinal hernia postoperatively.

RESULTS AND LIMITATIONS

RS-RARP was associated with less patient-reported penile shortening (41.7% vs 64.9%,  = 0.012), Peyronie's disease (0% vs 8.7%,  = 0.020), and inguinal hernia (0.0% vs 13.0%,  = 0.004). In adjusted analyses, RS-RARP (odds ratio [OR] 0.24, 95% confidence interval [CI] 0.09-0.63,  = 0.004) was associated with lower odds of penile shortening, while a higher body mass index was associated with increased odds of penile shortening (OR 1.13, 95% CI 1.01-1.26,  = 0.037). RS-RARP was not associated with a decreased risk of Peyronie's disease on Cox proportion hazard model; however, these models are limited due to a limited number of events in our cohort. Limitations include retrospective design, patient-reported outcomes, and small cohorts.

CONCLUSIONS

RS-RARP is associated with less patient-reported penile shortening and may decrease the risk of Peyronie's disease and postoperative inguinal hernia development. These new findings add to research, showing improved urinary continence and quality of life following RS-RARP; however, a prospective study is needed to validate these findings.

PATIENT SUMMARY

Retzius-sparing robotic-assisted radical prostatectomy (RS-RARP) is an evolving surgical technique for prostate cancer treatment, which has shown improved postoperative urinary control compared with the standard technique, likely due to preservation of natural pelvic anatomy. Our findings suggest that the preservation of normal pelvic anatomy during RS-RARP may also reduce the risk of postprostatectomy penile shortening, Peyronie's disease, and inguinal hernia.