Table 6 Erectile function in the studies comparing intrafacial and interfacial nerve-sparing radical prostatectomy.

From: Intrafascial versus interfascial nerve sparing in radical prostatectomy for localized prostate cancer: a systematic review and meta-analysis

Study No. of cases, type Method Criterion 3 mo, % 6 mo, % 12 mo, %
Stolzenburg7 200 ITR-NS IIEF and SEP Erectile function sufficient for intercourse with or without the help of PDE-5 inhibitors 64.8 82.8
200 ITE-NS 51.4 64.8
Ko8 9 ITR-NS Questionnaire Erections adequate for vaginal penetration with satisfaction, with or without the use of a PDE-5 inhibitor 88.9
32ITE-NS 65.6
Zheng9 65 ITR-NS SHIM Total scores of ≥22 in the SHIM questionnaire 46.4 67.9
130 ITE-NS 24.8 42.7
Khoder10 203 ITR-NS IIEF-5 Patients achievement of a composite score of 15 points or higher on the IIEF-5 questionnaire 47 80
163 ITE-NS 35 57
  1. ITR-NS = intrafacial nerve sparing; ITE-NS = interfacial nerve sparing; IEEF = International Index of Erectile Function; SEP = Sexual Encounter Profile diaries; SHIM = Sexual Health Inventory for Men questionnaire; PDE-5 = phosphodiesterase type 5.