Worldwide research trends on femur head necrosis (2000-2021): a bibliometrics analysis and suggestions for researchers.

BACKGROUND

Osteonecrosis of the femoral head (ONFH) is a common and stubborn disease. The main causes are venous stasis of the femoral head, arterial blood supply damage, bone cell and bone marrow death, and bone tissue necrosis and subsequent repair obstacles. Over the past 22 years, the number of papers on ONFH has, overall, continued to increase.

METHODS

Using bibliometrics, we investigated the trends, frontiers, and hotspots of global scientific output in the past 22 years. We searched Science Citation Index Expanded (SCIE) of the Web of Science Core Collection (WoSCC) and retrieved information associated with papers and records published between 2000 and 2021. We used VOSviewer and CiteSpace to conduct bibliometric analysis and visual analysis on the overall distribution of annual output, major countries, active institutions, journals, authors, commonly cited literature, and keywords. The impact and quality of the papers were assessed using the global citation score (GCS).

RESULTS

We retrieved a total of 2006 articles and reviews. Over the past 22 years, the number of publications (NP) increased. China ranked first in terms of NP, while the United States had the highest h-index and the highest number of citations (NC). Shanghai Jiao Tong University and International Orthopaedics were the institution and periodical, respectively. The paper written by Mont et al. in 2006 had the highest total GCS score, at 379. The top three keywords were "ischemic necrosis", "osteonecrosis", and "hip joint". Although there was a fluctuation in publications associated with ONFH, overall, the NP increased. China was the most prolific in this area, while the United States was the most influential country. The top 3 authors in terms of NP were Zhang, Motomura, and Zhao. Areas of focus in ONFH over recent years include signal pathway, genetic differentiation, glucocorticoid-induced osteogenesis, induced ischemic necrosis and osteogenesis.

CONCLUSIONS

Our bibliometrics analysis revealed the research hotspots and rapid development trends of ONFH research in the past 22 years. The most critical indicators [researchers, countries, research institutions, and journals publishing osteonecrosis of the femoral head (ONFH) research] relevant to the research hotspots in the field of ONFH research were analyzed.