Fig. 4From: The primary total knee arthroplasty: a global analysisBibliographic coupling analysis of global research on TKA. a Mapping on the 172 included journals in TKA area. b Mapping on the 750 institutions on TKA research. c Mapping on the 57 countries in this field. The line between two nodes indicates the similarity relationship between the corresponding journals/institutions/countriesBack to article page