Knowledge-map analysis of percutaneous nephrolithotomy (PNL) for urolithiasis

Area of Science:

• Urology
• Nephrology
• Bibliometrics

Background:

• Percutaneous nephrolithotomy (PNL) is a cornerstone treatment for urolithiasis, with over two decades of clinical application.
• Despite its widespread use, comprehensive bibliometric analyses of global PNL research are infrequent.

Purpose of the Study:

• To conduct a bibliometric analysis of global literature on percutaneous nephrolithotomy (PNL) for urolithiasis.
• To identify key research trends, influential authors, institutions, and collaborations in the field.

Main Methods:

• Literature retrieval from the Web of Science Core Collection database.
• Bibliometric analysis using VOSviewer to assess keywords, citations, publications, co-authorship, themes, and emerging topics.
• Analysis of 3103 retrieved articles.

Main Results:

• The most frequent keywords were "percutaneous nephrology" and "urolithiasis," with strong associations with "ureteroscopy."
• The Journal of Urology and Zeng Guohua were the most prolific in publications. The United States was the most productive country, collaborating with Canada, China, and Italy.
• Key research themes included PNL application methods, urolithiasis risk factors, treatment technology development, stone characteristics, and treatment efficacy evaluation.

Conclusions:

• This study provides a novel perspective on the global research landscape of PNL for urolithiasis.
• Offers valuable insights for urologic researchers regarding research hotspots, collaborative networks, and future research directions.