| アブストラクト | BACKGROUND: The total number of spine surgeries per year and their related deaths in Japan has not been adequately estimated in the literature. METHODS: We retrospectively reviewed the National Database of Health Insurance Claims and Specific Health Checkups of Japan (NDB) between April 2014 to March 2021, which covers 99.9 % of health insurance claim receipts by general practitioners. The annual number of surgeries was counted using K codes, a procedure classification unique to Japan, and classified into the following six categories; percutaneous vertebroplasty, endoscopic surgery, open discectomy, laminoplasty/laminectomy, instrumentation surgery, and others. The data distribution was also summarized by sex and age. Additionally, by reviewing DPC database-related papers for evaluation of the mortality rate after spine surgery in Japan, the number of spine surgery-related deaths was calculated. RESULTS: The NDB showed that the number of spine surgeries analyzed in this study increased from 170,081 in 2014 to 193,903 in 2019, with a slight decrease in 2020. The ratio of instrumentation surgery increased from 33.0 % in 2014 to 37.9 % in 2020. The rate of patients aged 75 or older increased 31.6 % to 39.6 %. Combining these findings with DPC data showing a mortality rate of 0.1 % to 0.4 % revealed that the estimated number of deaths related to spine surgery in Japan ranged from 200 to 800 per year. CONCLUSIONS: Approximately 200,000 spine surgeries and 200 to 800 spine surgery-related inpatient deaths were estimated to have occurred in Japan around 2020. |
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| 組織名 | Department of Orthopaedic Surgery and Spinal Surgery, The University of Tokyo,;7-3-1, Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan. Electronic address:;knagata-tky@umin.ac.jp.;7-3-1, Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan.;Department of Orthopaedic Surgery, University of California, San Francisco, CA,;94143, United States.;7-3-1, Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan; Nakanoshima Orthopaedics, F&F;Haimu, 6-26-2, Nakanoshima, Tama-ku, Kawasaki City 214-0012, Japan. |
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