The learning curve for laparoscopic radical prostatectomy: an international multicenter study

Area of Science:

• Urology
• Surgical Oncology
• Medical Education

Background:

• Estimating surgeon expertise in laparoscopic radical prostatectomy is crucial for patient outcomes.
• Positive surgical margins are a key indicator of surgical performance.

Purpose of the Study:

• To estimate the learning curve for laparoscopic radical prostatectomy concerning positive surgical margins.
• To compare this learning curve with that of open radical prostatectomy.

Main Methods:

• Analysis of 8,544 laparoscopic radical prostatectomy cases from 51 surgeons across 14 institutions.
• Statistical modeling to assess the probability of positive surgical margins as a function of surgeon experience.
• Inclusion of pathological stage, Gleason score, prostate-specific antigen, prior open surgery experience, and surgeon generation in the model.

Main Results:

• A plateau in positive surgical margin rates was observed between 200 and 250 cases.
• The absolute risk difference for positive margins between 10 and 250 prior surgeries was 4.8%.
• Neither prior open radical prostatectomy experience nor surgeon generation significantly influenced margin rates.

Conclusions:

• The learning curve for laparoscopic radical prostatectomy, specifically for surgical margins, stabilizes at approximately 200 to 250 procedures.
• Laparoscopic training and experience are the primary drivers of improved margin rates, rather than prior open surgery experience or surgeon seniority.