关键词: 股骨头坏死, 有限元分析, 内固定, 步态模拟, 塌陷风险, 预测, 研究现状, 生物力学

Abstract: BACKGROUND: Finite element analysis is a kind of analysis method widely used in the field of engineering technology, but because of its characteristics of high precision analysis of complex structures, the application of finite element analysis in the field of orthopedics is also increasing year by year. In recent ten years, numerous achievements have been made in the study of femoral head necrosis by finite element analysis at home and abroad. However, the analysis of current research status and hot trends is still lacking.
OBJECTIVE: To visually analyze research status and hotspot of finite element method in the field of femoral head necrosis in recent years. 
METHODS: Articles related to finite element analysis of femoral head necrosis during 2014-2023 were selected from CNKI database and Web of Science database. Citespace 6.1.R6 visual analysis software was used to summarize the main research contents of relevant articles and draw the scientific knowledge graph such as the annual number of publications, author graph, co-citation papers and hot keywords for summary. 
RESULTS AND CONCLUSION: (1) After literature retrieval according to relevant keywords, Citespace software was imported. After software deduplication function was used to remove duplicate articles, Web of Science core collected 385 related articles and CNKI database 149 related articles. (2) The keyword co-occurrence analysis found that the keyword frequency ranking in Web of Science database in recent ten years was as follows: finite element analysis (163 times), femoral head (83 times), arthroplasty (44 times), fixation (40 times), and replacement (39 times); centrality ranking: finite element method (0.21), hip joint (0.21), stability (0.19), fixation (0.15), and contact pressure (0.15). (3) The ranking of keywords frequency in CNKI database in recent ten years was as follows: finite element analysis (91 times), biomechanics (45 times), femoral head necrosis (42 times), femoral neck fracture (33 times), internal fixation (16 times), and the centrality ranking was as follows: internal fixation (0.45), 3D printing (0.44), Jianpi Huogu formula (0.43), three-dimensional reconstruction (0.42), and femur head necrosis (0.38). (4) In the past ten years, the research in the field of femoral head necrosis had developed from “static” to “dynamic”' at home and abroad. The overall process was basically similar, and the research on gait model and risk prediction was more in-depth. In addition, with the deepening of domestic scholars’ research on traditional Chinese medicine, the curative effect of traditional Chinese medicine in the treatment of femoral head necrosis had also been well verified. In the past ten years, the fields of medical materials and computer technology can become the focus of research at home and abroad. (5) Although the research in related fields in China is relatively slow, more clinical studies are still needed to verify. However, with the progress of science and technology in China, it is believed that domestic scholars will truly apply the finite element analysis of femoral head necrosis to clinical practice in the future, and play a role in assisting patients with individualized treatment and improving long-term efficacy.

Key words: femoral head necrosis, finite element analysis, internal fixation, gait simulation, collapse risk, prediction, research status, biomechanics