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Fig. 4 | Journal of Orthopaedic Surgery and Research

Fig. 4

From: Depicting developing trend and core knowledge of hip fracture research: a bibliometric and visualised analysis

Fig. 4

Co-occurrence analysis on hip fracture research. a Mapping of keywords in hip fracture research; the size of nodes represents the frequency, whilst the lines between nodes reflect the co-occurrence relationship. A total of 1458 included keywords were divided into five clusters: ‘mortality study’ (colour purple), ‘surgical management study’ (colour deep blue), ‘rehabilitation study’ (colour red), and ‘epidemiology study’ (colour light blue). b Distribution of keywords according to the time of appearance. The colour blue indicates the keywords that appeared earlier, whereas the colour red reflects the later occurrence

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