Per Kjær

5.7k total citations
79 papers, 3.5k citations indexed

About

Per Kjær is a scholar working on Pharmacology, Pathology and Forensic Medicine and Surgery. According to data from OpenAlex, Per Kjær has authored 79 papers receiving a total of 3.5k indexed citations (citations by other indexed papers that have themselves been cited), including 71 papers in Pharmacology, 51 papers in Pathology and Forensic Medicine and 13 papers in Surgery. Recurrent topics in Per Kjær's work include Musculoskeletal pain and rehabilitation (71 papers), Spine and Intervertebral Disc Pathology (50 papers) and Medical Imaging and Analysis (13 papers). Per Kjær is often cited by papers focused on Musculoskeletal pain and rehabilitation (71 papers), Spine and Intervertebral Disc Pathology (50 papers) and Medical Imaging and Analysis (13 papers). Per Kjær collaborates with scholars based in Denmark, Australia and Canada. Per Kjær's co-authors include Charlotte Leboeuf‐Yde, Joan Solgaard Sørensen, Lars Korsholm, Tom Bendix, Tue Secher Jensen, Claus Manniche, Niels Wedderkopp, Alice Kongsted, Jan Hartvigsen and T. Bendix and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Scientific Reports.

In The Last Decade

Per Kjær

77 papers receiving 3.4k citations

Peers

Countries citing papers authored by Per Kjær

Since Specialization

Citations

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

Fields of papers citing papers by Per Kjær

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Per Kjær

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	Associations Between Sum Scores or Combinations of MRI Findings in the Lumbar Spine and Low Back Pain‐Related Outcomes: A Systematic Review 2025 ·European Journal of Pain ·(unknown), Tue Secher Jensen, Per Kjær, Mark J. Hancock, (unknown), Rikke Krüger Jensen	1
2	How to summarise or combine lumbar MRI-findings for studying associations with low back pain: A modified Delphi study 2025 ·Musculoskeletal Science and Practice ·(unknown), Per Kjær, Rikke Krüger Jensen, Mark J. Hancock, Katie de Luca, Tue Secher Jensen	0
3	My back: co-designing municipal rehabilitation with and for individuals with long-lasting back problems: study protocol 2024 ·BMC Musculoskeletal Disorders ·Tina Junge, Per Kjær	0
4	Spinal degeneration and lumbar multifidus muscle quality may independently affect clinical outcomes in patients conservatively managed for low back or leg pain 2024 ·Scientific Reports ·(unknown), Tue Secher Jensen, Per Kjær, Angela Jacques, Jean Théroux, Jeffrey J. Hébert	1
5	Spinal degeneration is associated with lumbar multifidus morphology in secondary care patients with low back or leg pain 2022 ·Scientific Reports ·(unknown), Tue Secher Jensen, Per Kjær, Angela Jacques, Jean Théroux, Jeffrey J. Hébert	11
6	Using Intervention Mapping to Develop a Decision Support System–Based Smartphone App (selfBACK) to Support Self-management of Nonspecific Low Back Pain: Development and Usability Study 2021 ·Journal of Medical Internet Research ·Malene Jagd Svendsen, Louise Fleng Sandal, Per Kjær, Barbara I. Nicholl, Kay Cooper, Frances S Mair, Jan Hartvigsen, Mette Jensen Stochkendahl, Karen Søgaard, Paul Jarle Mork, Charlotte Diana Nørregaard Rasmussen	19
7	The Interexaminer Reproducibility and Prevalence of Lumbar and Gluteal Myofascial Trigger Points in Patients With Radiating Low Back Pain 2020 ·SHILAP Revista de lepidopterología ·(unknown), Per Kjær, Berit Schiøttz‐Christensen, (unknown), (unknown), Corrie Myburgh	5
8	Patient characteristics in knee, hip and back pain patients participating in patient education and exercise therapy. a comparison of 46,273 patients from the glad registries in Denmark 2020 ·Osteoarthritis and Cartilage ·Ewa M. Roos, D.T. Grønne, Inge Ris, Per Kjær, Jan Hartvigsen, Søren Thorgaard Skou, Alice Kongsted	3
9	An exploratory study of different definitions and thresholds for lumbar disc degeneration assessed by MRI and their associations with low back pain using data from a cohort study of a general population 2020 ·BMC Musculoskeletal Disorders ·(unknown), Per Kjær, Mark J. Hancock, Tue Secher Jensen	11
10	An App-Delivered Self-Management Program for People With Low Back Pain: Protocol for the selfBACK Randomized Controlled Trial 2019 ·JMIR Research Protocols ·Louise Fleng Sandal, Mette Jensen Stochkendahl, Malene Jagd Svendsen, Karen Wood, Cecilie K. Øverås, Anne Lovise Nordstoga, (unknown), Charlotte Diana Nørregaard Rasmussen, Barbara I. Nicholl, Kay Cooper, Per Kjær, Frances S Mair, Gisela Sjøgaard, Tom Ivar Lund Nilsen, Jan Hartvigsen, Kerstin Bach, Paul Jarle Mork, Karen Søgaard	34
11	GLA:D®BACK: feasibility of implementing standardized care for back pain through a 2-DAY clinician training course 2019 ·Osteoarthritis and Cartilage ·Alice Kongsted, Jan Hartvigsen, Inge Ris, Per Kjær, Eleanor Boyle, Lars Thomassen, Werner Vach	1
12	The natural course of low back pain from childhood to young adulthood – a systematic review 2019 ·Chiropractic & Manual Therapies ·Tina Junge, Niels Wedderkopp, Eleanor Boyle, Per Kjær	30
13	Relationships between paraspinal muscle morphology and neurocompressive conditions of the lumbar spine: a systematic review with meta-analysis 2018 ·BMC Musculoskeletal Disorders ·(unknown), Bruce F. Walker, (unknown), Per Kjær, Tue Secher Jensen, Jeffrey J. Hébert	58
14	Is the Number of Different MRI Findings More Strongly Associated With Low Back Pain Than Single MRI Findings? 2017 ·Spine ·Mark J. Hancock, Per Kjær, Peter Kent, Rikke Krüger Jensen, Tue Secher Jensen	17
15	Predictors of clinical outcome following lumbar disc surgery: the value of historical, physical examination, and muscle function variables 2015 ·European Spine Journal ·Jeffrey J. Hébert, Julie M. Fritz, Shane Koppenhaver, Anne Thackeray, Per Kjær	12
16	Can pathoanatomical pathways of degeneration in lumbar motion segments be identified by clustering MRI findings 2013 ·BMC Musculoskeletal Disorders ·Rikke Krüger Jensen, Tue Secher Jensen, Per Kjær, Peter Kent	10
17	Stability of low back pain reporting over 8 years in a general population aged 40/41 years at base-line: data from three consecutive cross-sectional surveys 2013 ·BMC Musculoskeletal Disorders ·Nadège Lemeunier, Charlotte Leboeuf‐Yde, Per Kjær, Olivier Gagey	7
18	Genetic Association Studies in Lumbar Disc Degeneration: A Systematic Review 2012 ·PLoS ONE ·Pasi J Eskola, Susanna Lemmelä, Per Kjær, Svetlana Solovieva, Minna Männikkö, Niels Tommerup, Allan Lind-Thomsen, Kirsti Husgafvel‐Pursiainen, Kmc Cheung, Danny Chan, Dino Samartzis, Jaro Karppinen	71
19	Are MRI-defined fat infiltrations in the multifidus muscles associated with low back pain? 2007 ·BMC Medicine ·Per Kjær, Tom Bendix, Joan Solgaard Sørensen, Lars Korsholm, Charlotte Leboeuf‐Yde	367
20	An Epidemiologic Study of MRI and Low Back Pain in 13-Year-Old Children 2005 ·Spine ·Per Kjær, (unknown), Jette Led Sørensen‎, (unknown)	100

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.

Explore authors with similar magnitude of impact