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  1. No Access

    Article

    Posterolateral full-endoscopic debridement and irrigation is effective in treating thoraco-lumbar pyogenic spondylodiscitis, except in cases with large abscess cavities

    To determine the efficacy and poor prognostic factors of posterolateral full-endoscopic debridement and irrigation (PEDI) surgery for thoraco-lumbar pyogenic spondylodiscitis.

    Katsuhisa Yamada, Masahiko Takahata, Ken Nagahama, Akira Iwata in European Spine Journal (2023)

  2. Article

    Real-world persistence of twice-weekly teriparatide and factors associated with the discontinuation in patients with osteoporosis

    A 28.2 μg twice-weekly formulation of teriparatide (2/W-TPD) was developed to provide comparably high efficacy for osteoporosis to a 56.5 μg once-weekly formulation while improving the safety and persistence r...

    Ryo Fujita, Tsutomu Endo, Masahiko Takahata in Journal of Bone and Mineral Metabolism (2022)

  3. No Access

    Article

    Association between obesity and ossification of spinal ligaments in 622 asymptomatic subjects: a cross-sectional study

    Previous studies on patients with symptoms of spinal ligament ossification, including ossification of the posterior longitudinal ligament (OPLL) and ligamentum flavum (OLF), have not clarified whether obesity ...

    Tsutomu Endo, Masahiko Takahata, Yoshinao Koike in Journal of Bone and Mineral Metabolism (2022)

  4. Article

    Open Access

    Short- versus long-segment posterior spinal fusion with vertebroplasty for osteoporotic vertebral collapse with neurological impairment in thoracolumbar spine: a multicenter study

    Vertebroplasty with posterior spinal fusion (VP + PSF) is one of the most widely accepted surgical techniques for treating osteoporotic vertebral collapse (OVC). Nevertheless, the effect of the extent of fusio...

    Yuya Ishikawa, Kei Watanabe, Keiichi Katsumi in BMC Musculoskeletal Disorders (2020)

  5. Article

    Open Access

    Effect of bisphosphonates or teriparatide on mechanical complications after posterior instrumented fusion for osteoporotic vertebral fracture: a multi-center retrospective study

    The optimal treatment of osteoporosis after reconstruction surgery for osteoporotic vertebral fractures (OVF) remains unclear. In this multicentre retrospective study, we investigated the effects of typically ...

    Atsuyuki Kawabata, Toshitaka Yoshii, Takashi Hirai in BMC Musculoskeletal Disorders (2020)

  6. No Access

    Article

    A Case Report of Huge Sacrum Undifferentiated Pleomorphic Sarcoma Treated with Two Separate Surgeries of Decompression and Stabilization

    Primary sacrum undifferentiated pleomorphic sarcoma (UPS) is an extremely rare malignant lesion. Furthermore, sacral tumor is often an uncontrollable condition, because the first diagnosis is usually made at a...

    Takeru Tsujimoto, Akira Iwata, Tomomichi Ka**o in SN Comprehensive Clinical Medicine (2020)

  7. Article

    Open Access

    Surgical outcomes of spinal fusion for osteoporotic thoracolumbar vertebral fractures in patients with Parkinson’s disease: what is the impact of Parkinson’s disease on surgical outcome?

    To date, there have been little published data on surgical outcomes for patients with PD with thoracolumbar OVF. We conducted a retrospective multicenter study of registry data to investigate the outcomes of f...

    Kei Watanabe, Keiichi Katsumi, Masayuki Ohashi in BMC Musculoskeletal Disorders (2019)

  8. No Access

    Article

    Peri-operative complications of lumbar spine surgery in patients over eighty five years of age: a retrospective cohort study

    To compare peri-operative complication rates in ≥ 85-year-old patients who underwent decompression surgery with or without instrumented fusion for degenerative disorders.

    Shingo Onda, Masahiro Kanayama, Tomoyuki Hashimoto in International Orthopaedics (2018)

  9. Article

    Open Access

    Effect of teriparatide (rh-PTH 1–34) versus bisphosphonate on the healing of osteoporotic vertebral compression fracture: A retrospective comparative study

    Teriparatide (recombinant human parathyroid hormone 1–34) is increasingly used for the treatment of severe osteoporosis because it stimulates bone formation and may potentially enhance fracture healing. The ob...

    Akira Iwata, Masahiro Kanayama, Fumihiro Oha in BMC Musculoskeletal Disorders (2017)

  10. No Access

    Article

    Does spinopelvic alignment affect the union status in thoracolumbar osteoporotic vertebral compression fracture?

    In the healing of osteoporotic vertebral fracture, global spinal mal-alignment might increase the load sharing at the fracture site and deteriorate the fracture healing. This study aimed to evaluate the effect...

    Akira Iwata, Masahiro Kanayama, Fumihiro Oha in European Journal of Orthopaedic Surgery & … (2017)

  11. No Access

    Article

    Efficacy of ankle-brachial index as a preoperative screening in spine surgery

    The aims of this study were to investigate the prevalence of peripheral arterial disease (PAD) and specify the patients who are necessary to measure ankle-brachial index (ABI) as a preoperative PAD screening i...

    Masaru Tanaka, Fumihiro Oha, Masahiro Kanayama, Akira Iwata in European Spine Journal (2016)

  12. No Access

    Article

    Does balloon kyphoplasty improve the global spinal alignment in osteoporotic vertebral fracture?

    Balloon kyphoplasty (BKP) has been a well-accepted procedure in the treatment of osteoporotic vertebral compression fracture (OVCF), whereas it remains unclear whether or not this procedure has an impact on th...

    Masahiro Kanayama, Fumihiro Oha, Akira Iwata in International Orthopaedics (2015)

  13. No Access

    Article

    Impact of deep extensor muscle-preserving approach on clinical outcome of laminoplasty for cervical spondylotic myelopathy: comparative cohort study

    This study aimed to compare patients undergoing deep extensor muscle-preserving laminoplasty and conventional open-door laminoplasty for the treatment of cervical spondylotic myelopathy (CSM). We specifically ...

    Yoshihisa Kotani, Kuniyoshi Abumi, Manabu Ito, Hideki Sudo in European Spine Journal (2012)

  14. No Access

    Article

    A retrospective study of congenital osseous anomalies at the craniocervical junction treated by occipitocervical plate-rod systems

    To evaluate the effectiveness of posterior occipitocervical reconstruction using the anchors of cervical pedicle screws and plate-rod systems for patients with congenital osseous anomalies at the craniocervica...

    **anjun Ding, Kuniyoshi Abumi, Manabu Ito, Hideki Sudo in European Spine Journal (2012)

  15. No Access

    Article

    Efficacy of Interferon Treatment for Chronic Hepatitis C Predicted by Feature Subset Selection and Support Vector Machine

    Chronic hepatitis C is a disease that is difficult to treat. At present, interferon might be the only drug, which can cure this kind of disease, but its efficacy is limited and patients face the risk of side e...

    Jun Yang, Anto Satriyo Nugroho, Kazunobu Yamauchi in Journal of Medical Systems (2007)

  16. No Access

    Article

    Support Vector Machine-Based Feature Selection for Classification of Liver Fibrosis Grade in Chronic Hepatitis C

    Although liver biopsy is currently regarded as the gold standard for staging liver fibrosis in chronic hepatitis C, it is a costly invasive procedure and carries a small risk for complication. Our aim in this ...

    Zheng Jiang, Kazunobu Yamauchi, Kentaro Yoshioka, Kazuma Aoki in Journal of Medical Systems (2006)

  17. No Access

    Article

    Decreased interferon binding capacity of peripheral blood mononuclear cells during interferon treatment of chronic hepatitis B with special reference to (2′-5′) oligoadenylate synthetase activity

    The levels of (2′-5′) oligoadenylate synthetase (2-5 AS) activity and interferon (IFN) binding capacity were measured in peripheral blood mononuclear cells (PBMC) obtained from 9 patients with chronic hepatiti...

    Michiko Shindo M.D., Akira Iwata, Tadao Okuno in Gastroenterologia Japonica (1989)