• Yoshiharu Kawaguchi, Guarise da SilvaPedroPThe Laboratory of Clinical Studies and Basic Models of Spinal Disorders, Argentina., Francine Wurzius Quadros, Luiz Henrique Merlin, Lucas Radaelli, Juan Pablo Guyot, Diego Dozza, Délio Martins, Nicolas Scheverin, Daniel K Riew, Tomoatsu Kimura, and Asdrubal Falavigna.
• Department of Orthopaedic Surgery, University of Toyama, Toyama, Japan. Electronic address: zenji@med.u-toyama.ac.jp.
• J Orthop Sci. 2016 Jan 1; 21 (1): 13-8.

BackgroundOver the last decade, the growing body of work on spine pathology has led to developments and refinements in the areas of basic science, diagnosis and treatment of a variety of spine conditions. Scientific publications have a global impact on the international scientific community as they share vital information that can be applied by physicians worldwide to solve their everyday medical problems. The historical background of scientific publication in journals in Japan on the subject of spine is unclear.MethodsWe performed a literature search for publications by Japanese spine surgeons regarding spine or spinal cord topics using an online database: Pubmed.gov (http://www.ncbi.nlm.nih.gov/pubmed/). The results were stored and analyzed at the Laboratory of Clinical Studies and Basic Models of Spinal Disorders of the University of Caxias do Sul. Results were limited to articles published from January 2000 to December 2013. The search terms used were "Japan" AND ("spine" OR "spinal diseases" OR "spinal cord" OR "spinal cord diseases" OR "vertebroplasty" OR "arthrodesis" OR "discectomy" OR "foraminotomy" OR "laminectomy" OR "denervation" OR "back injuries"). Japanese spine surgeons were defined as spine surgeons from orthopedic or neurosurgical specialties where the publication was affiliated with Japanese services.ResultsA total of 16,140 articles were identified by the Medline search. Most of the articles were excluded based on information provided in the title and abstract as they were not related to spine surgery. This study comprised 1768 articles published in the Medline database by Japanese spine surgeons from 2000 to 2013. The number of publications rose in a linear fashion, with the number of papers published increasing by 5.4 per year (p = 0.038). In recent years the publications were increasingly performed in conjunction with the neurosurgery and orthopedics specialties.ConclusionsThis study showed a clear increase in publications (on Medline) by Japanese spine surgeons over the last 14 years. While this is a positive development, there is also cause for concern as there is some evidence that the number of young scientists is declining in Japan. Special attention to educating researchers and improving resources for research is crucial to further increase the number and quality of Japanese publications.Copyright © 2015 The Japanese Orthopaedic Association. Published by Elsevier B.V. All rights reserved.

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