This map shows the geographic impact of Ritter Ma's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ritter Ma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ritter Ma more than expected).
This network shows the impact of papers produced by Ritter Ma. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ritter Ma. The network helps show where Ritter Ma may publish in the future.
Co-authorship network of co-authors of Ritter Ma
This figure shows the co-authorship network connecting the top 25 collaborators of Ritter Ma.
A scholar is included among the top collaborators of Ritter Ma based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with Ritter Ma. Ritter Ma is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ma, Ritter, et al.. (1998). Maximizing cost-effectiveness while minimizing complications in total hip replacement.. PubMed. 27(4). 295–8.2 indexed citations
3.
Ranawat, C S, et al.. (1995). Comparison of polyethylene wear in machined versus molded polyethylene.. PubMed. 37–43.50 indexed citations
Ma, Ritter, et al.. (1991). The effect of miscellaneous invasive procedures on subsequent total knee arthroplasty.. PubMed. 2(1). 46–52.1 indexed citations
6.
Gittins, Mark E., et al.. (1991). Early clinical results of hydroxyapatite-coated total hip arthroplasty.. PubMed. 2(4). 317–22.2 indexed citations
Ma, Ritter, et al.. (1990). Long-term follow-up of the Indiana conservative resurfacing hip arthroplasty.. PubMed. 1(1). 12–5.4 indexed citations
9.
Ma, Ritter, et al.. (1990). Roentgenographic evaluation of a conical threaded acetabular cup.. PubMed. 1(1). 45–9.1 indexed citations
10.
Larché, Mark, et al.. (1989). Analysis of the fine distribution of thymic epithelial microenvironmental molecules by immuno-electron microscopy.. PubMed. 13(3-4). 187–94.21 indexed citations
11.
Kampinga, J, R L Boyd, Miodrag Čolić, et al.. (1989). Thymic epithelial antibodies: immunohistological analysis and introduction of nomenclature.. PubMed. 13(3-4). 165–73.55 indexed citations
12.
Ma, Ritter, et al.. (1989). Comparison of intraoperative versus 24 hour antibiotic prophylaxis in total joint replacement. A controlled prospective study.. PubMed. 18(6). 694–6.26 indexed citations
13.
Ma, Ritter. (1989). Intraoperative controls for bacterial contamination during total knee replacement.. PubMed. 20(1). 49–53.4 indexed citations
Ma, Ritter, et al.. (1983). A non-surgical approach to preventing hematogenous infections in total joint replacements.. PubMed. 76(5). 320–2.2 indexed citations
Ma, Ritter, et al.. (1973). A histologic and hemodynamic study of the toxic effects of monomeric methyl methacrylate.. PubMed. 262–70.11 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.