JaLCDOI | 10.18926/AMO/31296 |
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FullText URL | fulltext.pdf |
Author | Takeuchi, Kazuhiro| Inoue, Hajime| Yokoyama, Yoshiki| Senda, Masuo| Ota, Yusuke| Abe, Nobuhiro| Nishida, Keiichiro| |
Abstract | We studied the magnetic resonance imaging (MRI) of 120 knees in 86 rheumatoid arthritis (RA) patients and of 14 unaffected knees in 12 control cases. We also developed a scoring system as a quantitative analysis method. We divided the MRI into 10 items, and classified the severity of the symptoms into 4 grades (score 0 to 3). The average total score increased according to the radiographic grade. Soft tissue lesions were clearly detected, even in the early stages of RA. Items such as synovial proliferation showed a high score even in the early stages, suggesting that it was the initial symptom of RA. The score also showed a correlation with the inflammatory signs. These results suggest that this scoring system is very sensitive and yields a good reflection of RA activity. We demonstrated that this system is simple and convenient for routine diagnostic use. We further demonstrated that it is useful for following the advancement of RA and for evaluating the response to treatment. |
Keywords | rheumatoid arthritis magnetic resonance imaging scoring system synovial membrane |
Amo Type | Article |
Publication Title | Acta Medica Okayama |
Published Date | 1998-08 |
Volume | volume52 |
Issue | issue4 |
Publisher | Okayama University Medical School |
Start Page | 211 |
End Page | 224 |
ISSN | 0386-300X |
NCID | AA00508441 |
Content Type | Journal Article |
language | English |
File Version | publisher |
Refereed | True |
PubMed ID | 9781272 |
Web of Science KeyUT | 000075623600006 |
FullText URL | JOS_015_Fulltext.pdf JOS_015_Figures.pptx |
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Author | Okazaki, Yuki| Furumatsu, Takayuki| Kamatsuki, Yusuke| Nishida, Keiichiro| Nasu, Yoshihisa| Nakahara, Ryuichi| Saito, Taichi| Ozaki, Toshifumi| |
Published Date | 2020-03-26 |
Publication Title | Journal of Orthopaedic Science |
Volume | volume26 |
Issue | issue2 |
Publisher | Elsevier |
Start Page | 230 |
End Page | 236 |
ISSN | 09492658 |
NCID | AA11052566 |
Content Type | Journal Article |
language | English |
OAI-PMH Set | 岡山大学 |
Copyright Holders | © 2020 The Japanese Orthopaedic Association. |
File Version | author |
PubMed ID | 32223991 |
DOI | 10.1016/j.jos.2020.02.015 |
Related Url | isVersionOf https://doi.org/10.1016/j.jos.2020.02.015 |
JaLCDOI | 10.18926/AMO/30749 |
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FullText URL | fulltext.pdf |
Author | Komiyama, Takamitsu| Nishida, Keiichiro| Yorimitsu, Masanori| Doi, Hideyuki| Miyazawa, Shinichi| Kitamura, Ai| Yoshida, Aki| Nasu, Yoshihisa| Abe, Nobuhiro| Ozaki, Toshifumi| |
Abstract | Ossification disturbance in femoral head reportedly is seen in the Spontaneously Hypertensive rats (SHR) between ages of 10 and 20 weeks. We investigated serum and tissue levels of insulin-like growth factor-1 (IGF-1) and vascular endothelial growth factor (VEGF) in SHR relevant to the ossification disturbance and osteonecrosis of the femoral head. Serum levels of IGF-1 and VEGF were significantly lower in SHR than in Wistar Kyoto rats (WKY) at weeks 5, 10, 15 and 20 (p<0.005). The incidence of histological ossification disturbance of the femoral head was higher in SHR (59%) than in WKY (40%) at week 20. Lower serum and local levels of VEGF in SHR appeared to be related to the incomplete ossification of the femoral heads. Immunohistochemical study showed significantly lower numbers of IGF-1 and VEGF positive chondrocytes in the femoral epiphyseal cartilage of SHR than in those of WKY at weeks 10, 15 and 20. Our results suggest that local and/or systemic levels of IGF-1 and VEGF between ages of 5 and 20 weeks might play roles in the pathogenesis of ossifi cation disturbance of the femoral head in SHR. |
Keywords | spontaneous hypertensive rats insulin like growth factor-1 vascular endothelial growth factor ossification disturbance osteonecrosis |
Amo Type | Article |
Publication Title | Acta Medica Okayama |
Published Date | 2006-06 |
Volume | volume60 |
Issue | issue3 |
Publisher | Okayama University Medical School |
Start Page | 141 |
End Page | 148 |
ISSN | 0386-300X |
NCID | AA00508441 |
Content Type | Journal Article |
language | English |
File Version | publisher |
Refereed | True |
PubMed ID | 16838042 |
Web of Science KeyUT | 000238503600001 |
JaLCDOI | 10.18926/AMO/31823 |
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FullText URL | fulltext.pdf |
Author | Tanaka, Masato| Nakanishi, Kazuo| Sugimoto, Yoshihisa| Misawa, Haruo| Takigawa, Tomoyuki| Nishida, Keiichiro| Ozaki, Toshifumi| |
Abstract | Scoliosis is a common clinical manifestation of Rett syndrome, a neurodevelopmental disorder that almost exclusively affects females. The spinal curve in patients with Rett syndrome is typically a long C curve of a neuromuscular type. As the onset of the scoliosis is very early and shows rapid progression, early surgical intervention has been recommended to prevent a life-threatening collapsing spine syndrome. However, there are high perioperative risks in Rett syndrome patients who undergo spinal surgery, such as neurological compromise and respiratory dysfunction due to rigid spinal curve. We herein report the surgical result of treating severe rapid progressive thoracic scoliosis in a 16-year-old girl with Rett syndrome. Posterior segmental pedicle screw fixation was performed from T1 to L3 using a computer-assisted technique. Post-operative radiography demonstrated a good correction of the curve in both the sagittal and coronal alignment. There were no postoperative complications such as neurological compromise. The patient had maintained satisfactory spinal balance as of the 3-year follow-up examination. |
Keywords | Rett syndrome scoliosis computer navigation-assisted surgery segmental pedicle screw fixation |
Amo Type | Case Report |
Publication Title | Acta Medica Okayama |
Published Date | 2009-12 |
Volume | volume63 |
Issue | issue6 |
Publisher | Okayama University Medical School |
Start Page | 373 |
End Page | 377 |
ISSN | 0386-300X |
NCID | AA00508441 |
Content Type | Journal Article |
language | English |
File Version | publisher |
Refereed | True |
PubMed ID | 20035294 |
Web of Science KeyUT | 000273145900009 |
FullText URL | fulltext.pdf |
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Author | Nakamichi, Ryo| Saito, Taichi| Shimamura, Yasunori| Hamada, Masanori| Nishida, Keiichiro| Ozaki, Toshifumi| |
Keywords | Carpal tunnel syndrome Mini-open Endoscopy Patient-oriented evaluation |
Note | The version of record of this article, first published in BMC Musculoskeletal Disorders, is available online at Publisher’s website: http://dx.doi.org/10.1186/s12891-023-07151-w| |
Published Date | 2024-04-01 |
Publication Title | BMC Musculoskeletal Disorders |
Volume | volume25 |
Issue | issue1 |
Publisher | BMC |
Start Page | 251 |
ISSN | 1471-2474 |
Content Type | Journal Article |
language | English |
OAI-PMH Set | 岡山大学 |
Copyright Holders | © The Author(s) 2024. |
File Version | publisher |
PubMed ID | 38561698 |
DOI | 10.1186/s12891-023-07151-w |
Web of Science KeyUT | 001195650000009 |
Related Url | isVersionOf https://doi.org/10.1186/s12891-023-07151-w |
FullText URL | fulltext.pdf |
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Author | Inai, Ryota| Nakahara, Ryuichi| Morimitsu, Yusuke| Akagi, Noriaki| Marukawa, Youhei| Matsushita, Toshi| Tanaka, Takashi| Tada, Akihiro| Hiraki, Takao| Nasu, Yoshihisa| Nishida, Keiichiro| Ozaki, Toshifumi| Kanazawa, Susumu| |
Keywords | Osteoporosis Bone density Tomography (x-ray computed) X-ray microtomography |
Published Date | 2021-01-28 |
Publication Title | European Radiology Experimental |
Volume | volume4 |
Issue | issue1 |
Publisher | Springer nature |
Start Page | 4 |
ISSN | 2509-9280 |
Content Type | Journal Article |
language | English |
OAI-PMH Set | 岡山大学 |
Copyright Holders | © The Author(s). 2020 |
File Version | publisher |
PubMed ID | 31993864 |
DOI | 10.1186/s41747-019-0135-0 |
Web of Science KeyUT | 000705622700001 |
Related Url | isVersionOf https://doi.org/10.1186/s41747-019-0135-0 |
JaLCDOI | 10.18926/AMO/32855 |
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FullText URL | fulltext.pdf |
Author | Shimamura, Yasunori| Nishida, Keiichiro| Imatani, Junya| Noda, Tomoyuki| Hashizume, Hiroyuki| Ohtsuka, Aiji| Ozaki, Toshifumi| |
Abstract | We biomechanically evaluated the bone fixation rigidity of an ONI plate (Group I) during fixation of experimentally created transcondylar humerus fractures in cadaveric elbows, which are the most frequently observed humeral fractures in the elderly, and compared it with the rigidity achieved by 3 conventional fixation methods:an LCP reconstruction plate 3.5 using a locking mechanism (Group II), a conventional reconstruction plate 3.5 (CRP) with a cannulated cancellous screw (Group III), and a CRP with 2 cannulated cancellous screws (CS) in a crisscross orientation (Group IV). In the axial loading test, the mean failure loads were:Group I, 98.9+/-32.6;Group II, 108.5+/-27.2;Group III, 50.0+/-7.5;and Group IV, 34.5+/-12.2 (N). Group I fixations failed at a significantly higher load than those of Groups III and IV (p0.05). In the extension loading test, the mean failure loads were:Group I, 34.0+/-12.4;Group II, 51.0+/-14.8;Group III, 19.3+/-6.0;and Group IV, 14.7+/-3.1 (N). Group IV fixations showed a significantly lower failure load than those of Group I (p0.05). The fixation rigidities against mechanical loading by the ONI plate and LCP plate were comparable. These results suggested that an ONI system might be superior to the CRP and CS method, and comparable to the LCP method in terms of fixation rigidity for distal humerus fractures. |
Keywords | distal humerus fracture biomechanics internal fixation elderly |
Amo Type | Original Article |
Publication Title | Acta Medica Okayama |
Published Date | 2010-04 |
Volume | volume64 |
Issue | issue2 |
Publisher | Okayama University Medical School |
Start Page | 115 |
End Page | 120 |
ISSN | 0386-300X |
NCID | AA00508441 |
Content Type | Journal Article |
language | English |
File Version | publisher |
Refereed | True |
PubMed ID | 20424666 |
Web of Science KeyUT | 000276996900005 |
Author | Demircan, Kadir| Hirohata, Satoshi| Nishida, Keiichiro| Hatipoglu, Omer F.| Oohashi, Toshitaka| Yonezawa, Tomoko| Apte, Suneel S.| Ninomiya, Yoshifumi| |
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Published Date | 2005-5 |
Publication Title | Arthritis & Rheumatism |
Volume | volume52 |
Issue | issue5 |
Content Type | Journal Article |
FullText URL | fulltext.pdf |
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Author | Ohashi, Hideki| Nishida, Keiichiro| Nasu, Yoshihisa| Saiga, Kenta| Nakahara, Ryuichi| Horita, Masahiro| Okita, Shunji| Ozaki, Toshifumi| |
Keywords | lesser toe metatarsophalangeal joint rheumatoid arthritis radiographic measurement grading system |
Published Date | 2021-07-15 |
Publication Title | International Journal of Environmental Research and Public Health |
Volume | volume18 |
Issue | issue14 |
Publisher | MDPI |
Start Page | 7520 |
ISSN | 1660-4601 |
Content Type | Journal Article |
language | English |
OAI-PMH Set | 岡山大学 |
Copyright Holders | © 2021 by the authors. |
File Version | publisher |
PubMed ID | 34299970 |
DOI | 10.3390/ijerph18147520 |
Web of Science KeyUT | 000676598200001 |
Related Url | isVersionOf https://doi.org/10.3390/ijerph18147520 |