{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T00:43:53Z","timestamp":1747183433248,"version":"3.40.5"},"reference-count":22,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2020,10,14]],"date-time":"2020-10-14T00:00:00Z","timestamp":1602633600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Asian J Endoscop Surgery"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Diagnosis is the key to improving spinal surgery outcomes. Improvements in the diagnosis of radiculopathy have created new indications for full\u2010endoscopic spine surgery. We assessed the finite element method (FEM) to visualize and digitize lesions not detected by conventional diagnostic imaging.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We used FEM in two patients: a lumbar patient and a cervical patient. The lumbar patient was a 67\u2010year\u2010old woman with a history of rheumatoid arthritis; she also had osteoporosis and pulmonary fibrosis. She had left L3 radiculopathy due to an L3 vertebral fracture. The cervical patient was a 61\u2010year\u2010old woman with left C6 radiculopathy due to C5\u2010C6 disc herniation. We performed full endoscopic foraminotomy per the patient<jats:styled-content>s<\/jats:styled-content>'s request. Based on preoperative and postoperative CT Digital Imaging and Communications in Medicine data of 0.5\u2010mm slices, 3\u2010D imaging data were reproduced, and kinetic simulation of FEM was performed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Postoperatively, both patients\u2019 radiculopathy disappeared, improving their activities of daily living and enabling them to walk and work. Also, the total contact area and maximum contact pressure of the nerve tissue decreased from 30% to 80% and from 33% to 67%, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>A new method for perioperative evaluation and simulation, FEM can be to visualize and digitize the conditions of the lesion causing radiculopathy. FEM that can overcome both time and economic constraints in routine clinical practice is needed.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ases.12879","type":"journal-article","created":{"date-parts":[[2020,10,14]],"date-time":"2020-10-14T07:15:06Z","timestamp":1602659706000},"page":"628-635","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Finite element method for nerve root decompression in minimally invasive endoscopic spinal surgery"],"prefix":"10.1111","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9977-6049","authenticated-orcid":false,"given":"Yoshihiro","family":"Kitahama","sequence":"first","affiliation":[{"name":"Medical Photonics Hamamatsu University School of Medicine  Hamamatsu Japan"},{"name":"Spine Center Omaezaki Municipal Hospital  Omaezaki 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