| Author | Furumatsu, Takayuki| Okazaki, Yuki| Hiranaka, Takaaki| Kodama, Yuya| Kamatsuki, Yusuke| Okazaki, Yoshiki| Zhang, Ximing| Ozaki, Toshifumi| |
|---|---|
| Note | This fulltext is available in Apr. 2021.| |
| Published Date | 2020-04-10 |
| Publication Title | Journal of Orthopaedic Science |
| Publisher | Elsevier |
| ISSN | 09492658 |
| NCID | AA11052566 |
| Content Type | Journal Article |
| language | 英語 |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2020 The Japanese Orthopaedic Association. |
| File Version | author |
| PubMed ID | 32284294 |
| DOI | 10.1016/j.jos.2020.03.012 |
| Related Url | isVersionOf https://doi.org/10.1016/j.jos.2020.03.012 |
| JaLCDOI | 10.18926/AMO/55304 |
|---|---|
| FullText URL | 71_4_279.pdf |
| Author | Fujii, Yosuke| Fujiwara, Kazuo| Tetsunaga, Tomonori| Miyake, Takamasa| Yamada, Kazuki| Endo, Hirosuke| Abe, Nobuhiro| Sugita, Naohiko| Mitsuishi, Mamoru| Inoue, Takayuki| Nakashima, Yoshio| Ozaki, Toshifumi| |
| Abstract | We developed a surface matching-type computed tomography (CT)-based navigation system for total hip arthroplasty (the N-navi; TEIJIN NAKASHIMA MEDICAL, Okayama, Japan). In the registration step, surface matching was performed with digitizing points on the pelvic bone surface after coarse paired matching. In the present study, we made model bones from the CT data of patients whose acetabular shapes had various deformities. We measured the distances and angles after surface matching from the fiducial points and evaluated the ability to correct surface-matching registration on each pelvic form, using several areas and numbers of points. When the surface-matching points were taken on the superior area of the acetabulum, the correction was easy for the external direction, but it was difficult to correct for the anterior and proximal directions. The correction was difficult for external and proximal directions on the posterior area. Each area of surface-matching points has particular directions that are easily corrected and other directions that are difficult to correct. The shape of the pelvis also affected the correction ability. Our present findings suggest that checking the position after coarse paired matching and choosing the surface-matching area and points that are optimal to correct will improve the accuracy of total hip arthroplasty and reduce surgical times. |
| Keywords | total hip arthroplasty CT-based navigation system surface matching |
| Amo Type | Original Article |
| Published Date | 2017-08 |
| Publication Title | Acta Medica Okayama |
| Volume | volume71 |
| Issue | issue4 |
| Publisher | Okayama University Medical School |
| Start Page | 279 |
| End Page | 289 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | 英語 |
| Copyright Holders | CopyrightⒸ 2017 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 28824183 |
| FullText URL | JOS_24_2_377.pdf |
|---|---|
| Author | Omori, Toshinori| Fujiwara, Tomohiro| Kunisada, Toshiyuki| Takeda, Ken| Hasei, Joe| Yoshida, Aki| Yanai, Hiroyuki| Ozaki, Toshifumi| |
| Published Date | 2019-03 |
| Publication Title | Journal of Orthopaedic Science |
| Volume | volume24 |
| Issue | issue2 |
| Publisher | Elsevier |
| Start Page | 377 |
| End Page | 381 |
| ISSN | 0949-2658 |
| NCID | AA11627828 |
| Content Type | Journal Article |
| language | 英語 |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2016 The Japanese Orthopaedic Association |
| File Version | author |
| PubMed ID | 28187993 |
| DOI | 10.1016/j.jos.2016.12.011 |
| Web of Science KeyUT | 000460662100033 |
| Related Url | isVersionOf https://doi.org/10.1016/j.jos.2016.12.011 |
| Author | Mazaki, Tetsuro| Shiozaki, Yasuyuki| Yamane, Kentaro| Yoshida, Aki| Nakamura, Mariko| Yoshida, Yasuhiro| Zhou, Di| Kitajima, Takashi| Tanaka, Masato| Ito, Yoshihiro| Ozaki, Toshifumi| Matsukawa, Akihiro| |
|---|---|
| Published Date | 2014-03-25 |
| Publication Title | Scientific Reports |
| Volume | volume4 |
| Content Type | Journal Article |
| FullText URL | CTR_2019_1631298.pdf Fig.pdf |
|---|---|
| Author | Hino, Tomohito| Furumatsu, Takayuki| Miyazawa, Shinichi| Fujii, Masataka| Kodama, Yuya| Kamatsuki, Yusuke| Okazaki, Yoshiki| Masuda, Shin| Okazaki, Yuki| Ozaki, Toshifumi| |
| Keywords | Medial meniscus posterior insertion histological analysis knee osteoarthritis medial meniscus posterior root tear transtibial pullout repair |
| Published Date | 2019-07-09 |
| Publication Title | Connective Tissue Research |
| Volume | volume61 |
| Issue | issue6 |
| Publisher | Taylor and Francis |
| Start Page | 546 |
| End Page | 553 |
| ISSN | 0300-8207 |
| NCID | AA00615033 |
| Content Type | Journal Article |
| language | 英語 |
| OAI-PMH Set | 岡山大学 |
| File Version | author |
| PubMed ID | 31181971 |
| DOI | 10.1080/03008207.2019.1631298 |
| Web of Science KeyUT | 000478374800001 |
| Related Url | isVersionOf https://doi.org/10.1080/03008207.2019.1631298 |
| FullText URL | J_Orthop_Sci_22_4_731.pdf fig.pdf tbl.pdf |
|---|---|
| Author | Furumatsu, Takayuki| Fujii, Masataka| Kodama, Yuya| Ozaki, Toshifumi| |
| Note | This is an Accepted Manuscript of an article published by Elsevier| |
| Published Date | 2017-07 |
| Publication Title | Journal of Orthopaedic Science |
| Volume | volume22 |
| Issue | issue4 |
| Publisher | Elsevier |
| Start Page | 731 |
| End Page | 736 |
| ISSN | 0949-2658 |
| NCID | AA11052566 |
| Content Type | Journal Article |
| language | 英語 |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja |
| File Version | author |
| PubMed ID | 28416188 |
| DOI | 10.1016/j.jos.2017.03.013 |
| Web of Science KeyUT | 000407394700025 |
| Related Url | isVersionOf https://doi.org/10.1016/j.jos.2017.03.013 |
| JaLCDOI | 10.18926/AMO/30784 |
|---|---|
| FullText URL | fulltext.pdf |
| Author | Kunisada, Toshiyuki| Kawai, Akira| Ozaki, Toshifumi| Sugihara, Shinsuke| Taguchi, Kohji| Inoue, Hajime| |
| Abstract | <p>In this study, we reviewed the clinical features of 11 patients with malignant schwannoma who were treated in our institute. Five patients had coexistent von Recklinghausen's disease and one of them showed multifocal occurrence. Patients with the centrally located tumors had a poorer prognosis than those with the others. The overall 3-year survival rate was 36%; 40% in patients with von Recklinghausen's disease and 33% in the others. At the time of the last follow-up, 9 patients had died of the tumor, one continued to be tumor free, and one was alive with tumor. Postoperative local recurrence developed in 5 patients (45%); 4 out of 6 patients (67%) who underwent a marginal excision and one out of 3 (33%) who underwent primary amputation. There was no local recurrence in patients after a wide excision with at least 3cm of normal tissue removed surrounding the tumor in all directions. Nine patients (82%) developed pulmonary metastasis. The effect of adjuvant chemotherapy was not clear in this study. The high risk of pulmonary metastasis in this disease indicates the necessity of more effective adjuvant chemotherapy.</p> |
| Keywords | malignant schwannoma clinical analysis von Recklinghausen's disease |
| Amo Type | Article |
| Published Date | 1997-04 |
| Publication Title | Acta Medica Okayama |
| Volume | volume51 |
| Issue | issue2 |
| Publisher | Okayama University Medical School |
| Start Page | 87 |
| End Page | 92 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | 英語 |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 9142345 |
| Web of Science KeyUT | A1997WX19600005 |
| JaLCDOI | 10.18926/AMO/52899 |
|---|---|
| FullText URL | 68_5_303.pdf |
| Author | Tanaka, Masato| Sugimoto, Yoshihisa| Arataki, Shinya| Takigawa, Tomoyuki| Ozaki, Toshifumi| |
| Abstract | Spinal deformity is an important clinical manifestation of Chiari I malformation (CM-I) and syringomyelia. Here we report the result of an 8-year follow-up of a 13-year-old girl with severe scoliosis associated with Chiari malformation and a large syringomyelia. The patient presented at our hospital at the age of 13 with a 68° scoliosis. Magnetic resonance imaging showed Chiari malformation and a large syringomyelia. Neurosurgical treatment involved foramen magnum decompression and partial C1 laminectomy, but the scoliosis still progressed. We present the first case report of a rare course of scoliosis in a patient with CM-I and a large syringomyelia. |
| Keywords | Chiari I malformation syringomyelia scoliosis |
| Amo Type | Case Report |
| Published Date | 2014-10 |
| Publication Title | Acta Medica Okayama |
| Volume | volume68 |
| Issue | issue5 |
| Publisher | Okayama University Medical School |
| Start Page | 303 |
| End Page | 306 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | 英語 |
| Copyright Holders | CopyrightⒸ 2014 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 25338487 |
| Web of Science KeyUT | 000343269300007 |
| JaLCDOI | 10.18926/AMO/52008 |
|---|---|
| FullText URL | 67_6_351.pdf |
| Author | Yokoyama, Yusuke| Abe, Nobuhiro| Fujiwara, Kazuo| Suzuki, Masahiko| Nakajima, Yoshikazu| Sugita, Naohiko| Mitsuishi, Mamoru| Nakashima, Yoshio| Ozaki, Toshifumi| |
| Abstract | A computer-assisted navigation system to be used for total knee arthroplasties (TKAs) was reported to improve the accuracy of bone resection and result in precise implant placement, but the concomitant surgical invasion and time consumption are clinical problems. We developed a computed tomography (CT)-based navigation system (NNS) to be used for minimally invasive TKA. It requires only the reference points from a small limited area of the medial femoral condyle and proximal tibia through a skin incision to obtain optical images. Here we evaluated the usefulness and accuracy of the NNS in comparison with the commercially available BrainLAB image-free navigation system (BLS). In a clinical experiment, the registration times obtained with the NNS tended to be shorter than those obtained with the BLS, but not significantly so. The NNS group tended to be in the extended position in the sagittal plane of the distal femur within 3 degrees, and the BLS group showed rather flexed deviation in the sagittal plane of the anterior femur. |
| Keywords | total knee arthroplasty navigation system minimally invasive surgery |
| Amo Type | Original Article |
| Published Date | 2013-12 |
| Publication Title | Acta Medica Okayama |
| Volume | volume67 |
| Issue | issue6 |
| Publisher | Okayama University Medical School |
| Start Page | 351 |
| End Page | 358 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | 英語 |
| Copyright Holders | CopyrightⒸ 2013 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 24356719 |
| Web of Science KeyUT | 000328915700003 |
| Related Url | http://ousar.lib.okayama-u.ac.jp/metadata/52515 |
| JaLCDOI | 10.18926/AMO/46634 |
|---|---|
| FullText URL | 65_3_211.pdf |
| Author | Nakanishi, Kazuo| Yamane, Kentarou| Tanaka, Masato| Misawa, Haruo| Saiga, Kenta| Ozaki, Toshifumi| |
| Abstract | Here we report a case of surgery for kyphosis of the thoracolumbar spine in an elderly patient, in whom surgery was performed because the patient had developed intractable digestive symptoms. The case was that of a 76-year-old female with complaints of back pain and dysphagia. When videofluoroscopic examination (VF) of swallowing was performed in the cardia of the stomach, images that indicated stagnation and the reflux of food were observed. It was easier for the patient to swallow food in the extension position. We performed corrective fusion of the posterior spine. After the surgery, the kyphosis angle was improved to 27°, the patient's back pain was alleviated, and it became easier for the patient to swallow food. VF also showed that the patient's difficulties with the passage of food had improved. We believe that surgery is a good treatment option for cases of kyphosis with digestive symptoms and deteriorating activities of daily living (ADL), even in the absence of pain and paralysis. VF is also useful for performing evaluations before and after surgery. |
| Keywords | kyphosis dysphagia videofluoroscopic examination of swallowing (VF) fusion |
| Amo Type | Case Report |
| Published Date | 2011-06 |
| Publication Title | Acta Medica Okayama |
| Volume | volume65 |
| Issue | issue3 |
| Publisher | Okayama University Medical School |
| Start Page | 211 |
| End Page | 214 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | 英語 |
| Copyright Holders | CopyrightⒸ 2011 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 21709720 |
| Web of Science KeyUT | 000292017500009 |
