Publications by authors named "Junichi Arima"

Most osteoporotic vertebral fractures (OVFs) are treated conservatively, but surgery is often indicated for residual pain, neuropathy, or severe deformity. OVFs tend to develop in elderly patients, so less invasive surgery is desirable. Surgery is mainly performed to stabilize the fractured vertebral body.

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Case: We report a patient with hypereosinophilia-associated massive osteolytic lesion of the sacrum who was admitted to our hospital. Genetic analysis revealed that atypical eosinophilic cells were positive for FIP1-like-1-platelet-derived growth factor receptor-alpha (FIP1L1-PDGFRA) fusion gene. Treatment was initiated with oral administration of imatinib mesylate.

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BACKGROUND Diffuse idiopathic skeletal hyperostosis (DISH) is characterized by the ossification of soft tissues, primarily the ligaments and enthesis. Exuberant osteophyte formation of the anterior longitudinal ligament of the spine is usually found. Among the reported complications of cervical osteophyte, dysphagia is the most frequent symptom, and dysphonia is rare.

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Object: The authors sought to quantify the clinical outcome of microscopic lumbar spinous process-splitting laminectomy in patients with lumbar spinal stenosis (LSS). They performed a microscopic laminectomy in which the spinous process is split longitudinally into 2 halves. For single-level decompression, they inserted a tubular retractor between the split process.

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Article Synopsis
  • Postoperative spinal epidural hematomas (SEHs) are infrequently reported but potentially underdiagnosed, as this study investigates their incidence and clinical effects in patients undergoing microendoscopic posterior decompression (MEPD) for lumbar spinal stenosis.
  • In a review of 30 patients, 10 (33%) developed SEHs post-surgery, with mild symptoms that resolved within three weeks, but these patients showed poorer dural sac expansion and slower recovery compared to those without SEHs.
  • The findings suggest that the occurrence of postoperative SEHs may be more common than previously thought, highlighting the need for prevention to improve patient recovery and outcomes.
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Object: The authors applied the technique of microendoscopic discectomy to posterior decompression procedures for lumbar spinal stenosis. The purpose of this study was to determine the feasibility of using an endoscopic technique to treat lumbar spinal stenosis and to evaluate the clinical and radiographic results of microendoscopic posterior decompression (MEPD).

Methods: Microendoscopic posterior decompression, which involves a unilateral endoscopic approach for bilateral decompression, was performed in 47 patients.

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Synopsis of recent research by authors named "Junichi Arima"

  • - Junichi Arima's research primarily focuses on spinal surgery and its complications, exploring innovative surgical techniques such as balloon kyphoplasty and microendoscopic procedures for effectively treating spinal conditions.
  • - His work includes case reports and evaluations of treatment outcomes for complex orthopedic issues, such as rare lytic bone lesions related to hypereosinophilic syndrome and conditions like diffuse idiopathic skeletal hyperostosis, highlighting the importance of tailored medical approaches.
  • - Arima has contributed significantly to understanding postoperative complications, particularly spinal epidural hematoma, and emphasizes the need for minimally invasive techniques to improve patient outcomes in spinal disorders.