C. Ratzlaff

497 total citations
28 papers, 355 citations indexed

About

C. Ratzlaff is a scholar working on Rheumatology, Surgery and Biomedical Engineering. According to data from OpenAlex, C. Ratzlaff has authored 28 papers receiving a total of 355 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Rheumatology, 17 papers in Surgery and 13 papers in Biomedical Engineering. Recurrent topics in C. Ratzlaff's work include Osteoarthritis Treatment and Mechanisms (14 papers), Lower Extremity Biomechanics and Pathologies (13 papers) and Hip disorders and treatments (11 papers). C. Ratzlaff is often cited by papers focused on Osteoarthritis Treatment and Mechanisms (14 papers), Lower Extremity Biomechanics and Pathologies (13 papers) and Hip disorders and treatments (11 papers). C. Ratzlaff collaborates with scholars based in Canada, United States and Australia. C. Ratzlaff's co-authors include Jacek A. Kopec, Mieke Koehoorn, Jolanda Cibere, John M. Esdaile, Bruce B. Forster, David R. Wilson, J. Duryea, Mary A. De Vera, Jean Gillies and Linda Li and has published in prestigious journals such as American Journal of Epidemiology, Journal of Orthopaedic Research® and Osteoarthritis and Cartilage.

In The Last Decade

C. Ratzlaff

28 papers receiving 345 citations

Peers

C. Ratzlaff

SURGE

RHEUM

OSM

PHARM

Keelan R. Enseki United States

Maria Constantinou Australia

Libby Spiers Australia

Gláucia Helena Gonçalves Brazil

Alexander Hoorntje Netherlands

M Lipperts Netherlands

Margaret D. Vaz Canada

Jéssica Bianca Aily Brazil

Carolyn Page Australia

K. Webster Australia

Keelan R. Enseki United States

C. Ratzlaff

477 ×2.2

SURGE

129 ×0.9

RHEUM

131 ×1.1

120 ×1.7

OSM

68 ×1.5

PHARM

Citations per year, relative to C. Ratzlaff C. Ratzlaff (= 1×) peers Keelan R. Enseki

Countries citing papers authored by C. Ratzlaff

Since Specialization

Citations

This map shows the geographic impact of C. Ratzlaff'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 C. Ratzlaff with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites C. Ratzlaff more than expected).

Fields of papers citing papers by C. Ratzlaff

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by C. Ratzlaff. 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 C. Ratzlaff. The network helps show where C. Ratzlaff may publish in the future.

Co-authorship network of co-authors of C. Ratzlaff

This figure shows the co-authorship network connecting the top 25 collaborators of C. Ratzlaff. A scholar is included among the top collaborators of C. Ratzlaff 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 C. Ratzlaff. C. Ratzlaff is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Marchand, Nathalie, Yang Hu, Mingyang Song, et al.. (2023). Alcohol Consumption and Risk of Total Hip Replacement Due to Hip Osteoarthritis in Women. Arthritis & Rheumatology. 75(9). 1522–1531. 3 indexed citations

Macri, Erin M., et al.. (2020). In individuals with patellofemoral osteoarthritis, function but not strength was lower compared to matched controls. Osteoarthritis and Cartilage. 28. S373–S373. 1 indexed citations

Kopec, Jacek A., Hong Qian, Hubert Wong, et al.. (2019). Prevalence of Femoroacetabular Impingement Syndrome among Young and Middle-aged White Adults. The Journal of Rheumatology. 47(9). 1440–1445. 14 indexed citations

Ratzlaff, C., Erin L. Ashbeck, Ali Guermazi, et al.. (2018). A quantitative metric for knee osteoarthritis: reference values of joint space loss. Osteoarthritis and Cartilage. 26(9). 1215–1224. 23 indexed citations

Kopec, Jacek A., Jolanda Cibere, Linda Li, et al.. (2017). Relationship between physical activity and hip pain in persons with and without cam or pincer morphology: a population-based case–control study. Osteoarthritis and Cartilage. 25(7). 1055–1061. 18 indexed citations

Ratzlaff, C., Linda Li, Hubert Wong, et al.. (2015). The prevalence and diagnostic accuracy of clinical exam tests in identifying radiographic femoroacetabular impingement (FAI): A prospective population-based study. Osteoarthritis and Cartilage. 23. A170–A171. 2 indexed citations

Zhang, Honglin, et al.. (2015). Open‐MRI measures of cam intrusion for hips in an anterior impingement position relate to acetabular contact force. Journal of Orthopaedic Research®. 34(2). 205–216. 13 indexed citations

Zhang, Charlie, Linda Li, Bruce B. Forster, et al.. (2015). Femoroacetabular impingement and osteoarthritis of the hip.. PubMed. 61(12). 1055–60. 40 indexed citations

Ratzlaff, C., et al.. (2014). Location-specific hip joint space width for progression of hip osteoarthritis – Data from the Osteoarthritis Initiative. Osteoarthritis and Cartilage. 22(10). 1481–1487. 14 indexed citations

10.

Ratzlaff, C., K. Kwoh, Michael J. Hannon, et al.. (2014). Quantitative MRI measures of bone marrow lesion volume predict total knee replacement. Osteoarthritis and Cartilage. 22. S238–S239. 1 indexed citations

11.

Ratzlaff, C., et al.. (2014). Quantitatively-measured bone marrow lesions in the patellofemoral joint: distribution and association with pain. Osteoarthritis and Cartilage. 22. S247–S248. 3 indexed citations

12.

Ratzlaff, C., et al.. (2012). Responsiveness of a semi-automated novel method of measuring cartilage loss in knee osteoarthritis over two years using 3.0T DESS 3D MRI. Osteoarthritis and Cartilage. 20. S221–S221. 2 indexed citations

13.

Ratzlaff, C., Jacqueline Simatovic, Hubert Wong, et al.. (2012). Reliability of hip examination tests for femoroacetabular impingement (FAI). Osteoarthritis and Cartilage. 20. S159–S159. 2 indexed citations

14.

O’Brien, Julie, Bruce B. Forster, Mary A. De Vera, et al.. (2012). The prevalence of radiographic femoroacetabular impingement in younger individuals undergoing total hip replacement for osteoarthritis. Clinical Rheumatology. 31(8). 1239–1242. 17 indexed citations

15.

Ratzlaff, C., Mieke Koehoorn, Jolanda Cibere, & Jacek A. Kopec. (2012). Clinical validation of an Internet-based questionnaire for ascertaining hip and knee osteoarthritis. Osteoarthritis and Cartilage. 20(12). 1568–1573. 19 indexed citations

16.

Ratzlaff, C., Mieke Koehoorn, Jolanda Cibere, et al.. (2011). Influence of lifetime hip joint force on the risk of self-reported hip osteoarthritis: a community-based cohort study. Osteoarthritis and Cartilage. 19(4). 389–398. 21 indexed citations

17.

Vera, Mary A. De, et al.. (2010). Reliability and Validity of an Internet-based Questionnaire Measuring Lifetime Physical Activity. American Journal of Epidemiology. 172(10). 1190–1198. 34 indexed citations

18.

Ratzlaff, C., Jean Gillies, & Mieke Koehoorn. (2007). Work‐related repetitive strain injury and leisure‐time physical activity. Arthritis Care & Research. 57(3). 495–500. 25 indexed citations

19.

Ratzlaff, C., et al.. (2005). Computer-administered bath ankylosing spondylitis and Quebec Scale outcome questionnaires for low back pain: agreement with traditional paper format.. PubMed. 32(4). 669–72. 10 indexed citations

20.

Ratzlaff, C., et al.. (1990). Semitendinosus repair augmentation of acute anterior cruciate ligament rupture.. PubMed. 15(2). 137–42. 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.

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