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 IntOrthop_43_5_1239.pdf Tables.pdf Fig.pdf
Author Furumatsu, Takayuki| Miyazawa, Shinichi| Fujii, Masataka| Tanaka, Takaaki| Kodama, Yuya| Ozaki, Toshifumi|
Keywords Arthroscopic scoring Medial meniscus Meniscal healing Posterior root tear Transtibial pullout repair
Published Date 2018-08-01
Publication Title International Orthopaedics
Volume volume43
Issue issue5
Publisher Springer
Start Page 1239
End Page 1245
ISSN 03412695
NCID AA0068148X
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 30069591
DOI 10.1007/s00264-018-4071-z
Web of Science KeyUT 000466730800024
Related Url isVersionOf https://doi.org/10.1007/s00264-018-4071-z
FullText URL OTSR105_1_107.pdf Fig.pdf
Author Furumatsu, Takayuki| Okazaki, Yuki| Okazaki, Yoshiki| Hino, Tomohito| Kamatsuki, Yusuke| Masuda, Shin| Miyazawa, Shinichi| Nakata, Eiji| Hasei, Joe| Kunisada, Toshiyuki| Ozaki, Toshifumi|
Keywords Descending knee motion Injury pattern Medial meniscus Posterior root tear Squatting
Published Date 2019-02-28
Publication Title Orthopaedics & Traumatology: Surgery & Research
Volume volume105
Issue issue1
Publisher Elsevier
Start Page 107
End Page 111
ISSN 18770568
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 30442555
DOI 10.1016/j.otsr.2018.10.001
Web of Science KeyUT 000456541300018
Related Url isVersionOf https://doi.org/10.1016/j.otsr.2018.10.001
JaLCDOI 10.18926/AMO/53910
FullText URL 69_6_355.pdf
Author Okada, Yukimasa| Furumatsu, Takayuki| Miyazawa, Shinichi| Tanaka, Takaaki| Fujii, Masataka| Ozaki, Toshifumi| Abe, Nobuhiro|
Abstract Venous thromboembolism (VTE) is a potential complication occurring after total knee arthroplasty (TKA). We investigated the incidence of VTE after TKA using contrast-enhanced computed tomography (CT), and assessed the efficacy of VTE prophylaxis (fondaparinux and enoxaparin). At our hospital, 189 patients (225 knees) underwent TKA between April 2007 and October 2011. The 225 knees were divided into a control group with no VTE prophylaxis (31 cases), a fondaparinux group (107 cases), and an enoxaparin group (87 cases). Contrast-enhanced CT screening for VTE was performed in all cases on day 5 or 6 after TKA. D-dimer levels were measured on day 5 after TKA, and were significantly lower in the fondaparinux (9.8±3.8) and enoxaparin groups (9.4±4.9) than in the control group (15.6±9.8) (p<0.001). However, no statistically significant difference in the incidence of VTE was observed among the groups (control, 61.3%;fondaparinux, 49.5%;enoxaparin, 50.6%). Prophylaxis was not effective for the prevention of VTE as detected by contrast-enhanced CT after TKA. CT should be performed after TKA, even when VTE prophylaxis is used.
Keywords venous thromboembolism contrast-enhanced computed tomography total knee arthroplasty fondaparinux enoxaparin
Amo Type Original Article
Published Date 2015-12
Publication Title Acta Medica Okayama
Volume volume69
Issue issue6
Publisher Okayama University Medical School
Start Page 355
End Page 359
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2015 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 26690246
Web of Science KeyUT 000368434500005
Author Sakata, Kenichiro| Furumatsu, Takayuki| Miyazawa, Shinichi| Okada, Yukimasa| Fujii, Masataka| Ozaki, Toshifumi|
Published Date 2013-01
Publication Title International Orthopaedics
Volume volume37
Issue issue1
Content Type Journal Article
JaLCDOI 10.18926/AMO/49259
FullText URL 67_1_65.pdf
Author Sakata, Kenichiro| Furumatsu, Takayuki| Abe, Nobuhiro| Miyazawa, Shinichi| Sakoma, Yoshimasa| Ozaki, Toshifumi|
Abstract Bone marrow-stimulating techniques such as microfracture and subchondral drilling are valuable treatments for full-thickness cartilage defects. However, marrow stimulation-derived reparative tissues are not histologically well-documented in human osteoarthritis. We retrospectively investigated cartilage repairs after marrow stimulation for the treatment of large cartilage defects in osteoarthritic knees. Tissues were obtained from patients who underwent total knee arthroplasty (TKA) after arthroscopic marrow stimulation in medial compartmental osteoarthritis. Clinical findings and cartilage repair were assessed. Sections of medial femoral condyles were histologically investigated by safranin O staining and anti-type II collagen antibody. Marrow stimulation decreased the knee pain in the short term. However, varus leg alignment gradually progressed, and TKA conversions were required. The grade of cartilage repair was not improved. Marrow stimulations resulted in insufficient cartilage regeneration on medial femoral condyles. Safranin O-stained proteoglycans and type II collagen were observed in the deep zone of marrow-stimulated holes. This study demonstrated that marrow stimulation resulted in failed cartilage repair for the treatment of large cartilage defects in osteoarthritic knees. Our results suggest that arthroscopic marrow stimulation might not improve clinical symptoms for the long term in patients suffering large osteoarthritic cartilage defects.
Keywords bone marrow stimulation microfracture subchondral drilling osteoarthritis of the knee cartilage repair
Amo Type Case Report
Published Date 2013-02
Publication Title Acta Medica Okayama
Volume volume67
Issue issue1
Publisher Okayama University Medical School
Start Page 65
End Page 74
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 23439511
Web of Science KeyUT 000316829900009
JaLCDOI 10.18926/AMO/52901
FullText URL 68_5_313.pdf
Author Yamane, Kentaro| Tanaka, Masato| Sugimoto, Yoshihisa| Ichimura, Kouichi| Ozaki, Toshifumi|
Abstract Ossified meningioma is classified histologically as a phenotype of metaplastic meningioma, and it is extremely rare. There are only 12 cases involving ossified spinal meningiomas in the literature. We present the case of a 61-year-old female with a primary tumor within the ventral spinal canal at T12. Although we performed a total tumor excision using an ultrasonic bone aspirator, a temporary deterioration of motor evoked potentials (MEPs) was observed during curettage with a Kerrison rongeur. The neurologic findings worsened immediately after surgery. Histologically, the tumor was diagnosed as a metaplastic meningioma with osseous differentiation. In order to avoid spinal cord injury, great care must be taken when removing an ossified meningioma located on the ventral spinal cord.
Keywords spinal metaplastic meningioma osseous differentiation ossified meningioma ultrasonic bone aspirator post-operative course
Amo Type Case Report
Published Date 2014-10
Publication Title Acta Medica Okayama
Volume volume68
Issue issue5
Publisher Okayama University Medical School
Start Page 313
End Page 316
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 25338489
Web of Science KeyUT 000343269300009
JaLCDOI 10.18926/AMO/49670
FullText URL 67_2_113.pdf
Author Sugimoto, Yoshihisa| Tanaka, Masato| Gobara, Hideo| Misawa, Haruo| Kunisada, Toshiyuki| Ozaki, Toshifumi|
Abstract We report on 2 patients who experienced injury to one of their lumbar arteries related to pedicle screw misplacement. In this report, the lumbar pedicle screw holes were made laterally with resultant injury to the lumbar artery. During surgery, arterial bleeding was controlled with pressure and gauze; however, the patients experienced vital shock after surgery. Vital shock ensued and they were rescued by catheter embolization. If patients receiving lumbar instrumentation surgery experience severe anemia or vital shock postoperatively, the surgeon should assume lumbar artery injury as a differential diagnosis.
Keywords catheter embolization complication lumbar artery injury pedicle screw
Amo Type Case Report
Published Date 2013-04
Publication Title Acta Medica Okayama
Volume volume67
Issue issue2
Publisher Okayama University Medical School
Start Page 113
End Page 116
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 23603928
Web of Science KeyUT 000317801700006
JaLCDOI 10.18926/AMO/49047
FullText URL 66_6_499.pdf
Author Sugimoto, Yoshihisa| Tanaka, Masato| Nakahara, Ryuichi| Misawa, Haruo| Kunisada, Toshiyuki| Ozaki, Toshifumi|
Abstract An 11 year-old girl had 66 degrees of kyphosis in the thoracolumbar junction. For the purpose of planning for kyphosis correction, we created a 3-D, full-scale model of the spine and consulted spinal navigation. Three-dimensional models are generally used as tactile guides to verify the surgical approach and portray the anatomic relations specific to a given patient. We performed posterior fusion from Th10 to L3, and vertebral column resection of Th12 and L1. Screw entry points, directions, lengths and diameters were determined by reference to navigation. Both tools were useful in the bone resection. We could easily detect the posterior element to be resected using the 3D model. During the anterior bony resection, navigation helped us to check the disc level and anterior wall of the vertebrae, which were otherwise difficult to detect due to their depth in the surgical field. Thus, the combination of navigation and 3D models helped us to safely perform surgery for a patient with complex spinal deformity.
Keywords congenital scoliosis kyphosis navigation 3-dimensional models
Amo Type Case Report
Published Date 2012-12
Publication Title Acta Medica Okayama
Volume volume66
Issue issue6
Publisher Okayama University Medical School
Start Page 499
End Page 502
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2012 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 23254585
Web of Science KeyUT 000312966100010
JaLCDOI 10.18926/AMO/49043
FullText URL 66_6_469.pdf
Author Shiozaki, Yasuyuki| Ito, Yasuo| Sugimoto, Yoshihisa| Tomioka, Masao| Shimokawa, Tetsuya| Mazaki, Tetsuro| Koshimune, Koichiro| Tanaka, Masato| Ozaki, Toshifumi|
Abstract In this study, we studied the relationship between fracture patterns and motor function recovery in 70 consecutive patients with cervical spinal cord injury. Fractures were categorized into 6 fracture types and subdivided into stages according to the Allen-Ferguson classification system:compressive flexion (CF), distractive flexion (DF), compressive extension (CE), distractive extension (DE), vertical compression (VC) and lateral flexion (LF). Paralysis was evaluated using the American Spinal Injury Association (ASIA) impairment scale at the time of injury and 3 months afterwards. The residual rate of complete motor palsy (ASIA grade A or B) at the final examination was higher in those patients with DE fractures than those with CF, DF or CE. The final outcomes were as follows. Of the 14 patients who were classified with CF fractures, residual palsy was frequently seen in patients who had stage 5 injury. Of the 27 patients with DF fractures, residual palsy occurred in about half of the patients who had stage 4 or 5 injury. Of the 18 patients with CE fractures, residual palsy occurred in half of the patients with stage 3 injury or higher. Finally, of the 7 patients with DE fractures, the rate of residual palsy was high even for the stage 1 and 2 cases;indeed, all DE patients who had complete motor palsy at the first examination had residual palsy at the final examination. Accordingly, we conclude that motor recovery may be related to fracture pattern.
Keywords cervical spinal cord injury motor function recovery fracture patterns
Amo Type Original Article
Published Date 2012-12
Publication Title Acta Medica Okayama
Volume volume66
Issue issue6
Publisher Okayama University Medical School
Start Page 469
End Page 473
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2012 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 23254581
Web of Science KeyUT 000312966100006
FullText URL AOTS20191023.pdf fig.pdf Table.pdf
Author Yamamoto, Norio| Noda, Tomoyuki| Saito, Taichi| Uehara, Takenori| Shimamura, Yasunori| Ozaki, Toshifumi|
Keywords Acetabular fracture External iliac artery External iliac vein Ilioinguinal approach Occlusion Thrombosis
Note This is a post-peer-review, pre-copyedit version of an article published in Archives of Orthopaedic and Trauma Surgery. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00402-019-03288-3.|
Published Date 2019-10-23
Publication Title Archives of Orthopaedic and Trauma Surgery
Volume volume140
Issue issue4
Publisher Springer
Start Page 481
End Page 485
ISSN 0936-8051
NCID AA10738765
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 31642955
DOI 10.1007/s00402-019-03288-3
Web of Science KeyUT 000492001100001
Related Url isVersionOf https://doi.org/10.1007/s00402-019-03288-3
JaLCDOI 10.18926/AMO/54811
FullText URL 70_6_477.pdf
Author Nishida, Keiichiro| Machida, Takahiro| Horita, Masahiro| Hashizume, Kenzo| Nakahara, Ryuichi| Nasu, Yoshihisa| Ohashi, Hideki| Saiga, Kenta| Ozaki, Toshifumi|
Abstract The metatarsophalangeal (MTP) joints are often and predominantly affected in rheumatoid arthritis. The aim of the current study was to describe surgical techniques of shortening oblique osteotomy for lesser metatarsal bone with screw fixation at the osteotomy site, and to investigate the short-term clinical outcomes of our procedure. Twenty-seven feet (78 toes) of 24 RA patients underwent the shortening oblique osteotomy for the correction of deformity at the lesser MTP joints. The average Japanese Society of Surgery of the Foot (JSSF) standard rating system for the RA foot and ankle scale improved significantly from 59.6 points preoperatively to 88.3 points postoperatively (p<0.001). Twenty-four feet (89 ) were free from metatarsalgia and symptomatic callosities at the lesser MTP joint after surgery. Our present findings showed satisfactory early clinical outcomes of the shortening oblique osteotomy of the metatarsal bone with screw fixation for RA forefoot.
Keywords shortening oblique osteotomy rheumatoid arthritis forefoot screw fixation
Amo Type Original Article
Published Date 2016-12
Publication Title Acta Medica Okayama
Volume volume70
Issue issue6
Publisher Okayama University Medical School
Start Page 477
End Page 483
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2016 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 28003673
JaLCDOI 10.18926/AMO/53119
FullText URL 69_1_29.pdf
Author Nakahara, Ryuichi| Nishida, Keiichiro| Hashizume, Kenzo| Harada, Ryouzou| Machida, Takahiro| Horita, Masahiro| Ohtsuka, Aiji| Ozaki, Toshifumi|
Abstract The outcome measures in rheumatology clinical trials (OMERACT) scores are the most mature quantitation system for rheumatoid arthritis (RA) on magnetic resonance imaging (MRI). Direct measuring techniques of synovial volume have been reported with good reproducibility, although few reports have demonstrated the changes of these measures in response to treatment. To assess these clinical responses, we evaluated the correlation of the changes of clinical activity score 28-joints disease activity score (DAS28-CRP) with the changes of OMERACT scores and with synovial volume measurements. Eight RA patients who were treated by biologic agents were examined with MRI of the dominant affected wrist and finger joints before and one year after the treatment. The total OMERACT score was reduced from 48.0 to 41.3, and synovial volume was reduced from 15.4 to 8.8 milliliters. Positive correlations were seen between the changes of DAS28-CRP and the changes of OMERACT synovitis score (r=0.27), OMERACT total score (r=0.43) and synovial volume (r=0.30). Limited to synovium assessment, synovial volume showed a better correlation with DAS28-CRP than the OMERACT synovitis score. On the other hand, the OMERACT total score showed a higher correlation with DAS28-CRP than synovial volume, probably because the OMERACT total score includes scores for bone erosion and bone edema as well.
Keywords magnetic resonance imaging rheumatoid arthritis outcome measures in rheumatology clinical trials scoring system direct volume measuring medical work station
Amo Type Original Article
Published Date 2015-02
Publication Title Acta Medica Okayama
Volume volume69
Issue issue1
Publisher Okayama University Medical School
Start Page 29
End Page 35
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2015 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 25703168
Web of Science KeyUT 000349740300003
Related Url http://ousar.lib.okayama-u.ac.jp/metadata/53113
FullText URL fulltext.pdf
Author Saito, Taichi| Noda, Tomoyuki| Kondo, Hiroya| Demiya, Koji| Nezu, Satoshi| Yokoo, Suguru| Matsuhashi, Minami| Uehara, Takenori| Shimamura, Yasunori| Kodama, Masayuki| Ozaki, Toshifumi|
Abstract Alternative Septic arthritis in distal interphalangeal (DIP) joints sometimes occurs in association with mucous cysts or after the surgical treatment of mallet fingers. Recently, several studies have demonstrated...
Keywords Hand Induced membrane Masquelet technique Septic arthritis The small joint
Published Date 2020-02-29
Publication Title Trauma Case Reports
Volume volume25
Start Page 100268
ISSN 23526440
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2019 The Authors. Published by Elsevier Ltd.
File Version publisher
PubMed ID 1890833
DOI 10.1016/j.tcr.2019.100268
Related Url isVersionOf https://doi.org/10.1016/j.tcr.2019.100268
Author Nishida, Keiichiro| Hashizume, Kenzo| Ozawa, Masatsugu| Takeshita, Ayumu| Kaneda, Daisuke| Nakahara, Ryuichi| Nasu, Yoshihisa| Shimamura, Yasunori| Inoue, Hajime| Ozaki, Toshifumi|
Published Date 2017-02
Publication Title Acta Medica Okayama
Volume volume71
Issue issue1
Content Type Journal Article
JaLCDOI 10.18926/AMO/54824
Author Shimamura, Yasunori| Inoue, Madoka| Ozawa, Masatugu| Kanazawa, Tomoko| Saitou, Taiichi| Nakahara, Ryuichi| Noda, Tomoyuki| Nishida, Keiichiro| Ozaki, Toshifumi|
Published Date 2011-08-01
Publication Title 岡山医学会雑誌
Volume volume123
Issue issue2
Content Type Journal Article
JaLCDOI 10.18926/AMO/32855
FullText URL fulltext.pdf
Author Shimamura, Yasunori| Nishida, Keiichiro| Imatani, Junya| Noda, Tomoyuki| Hashizume, Hiroyuki| Ohtsuka, Aiji| Ozaki, Toshifumi|
Abstract <p>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.</p>
Keywords distal humerus fracture biomechanics internal fixation elderly
Amo Type Original Article
Published Date 2010-04
Publication Title Acta Medica Okayama
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 英語
File Version publisher
Refereed True
PubMed ID 20424666
Web of Science KeyUT 000276996900005
Author Hasei, Joe| Sasaki, Tsuyoshi| Tazawa, Hiroshi| Osaki, Shuhei| Yamakawa, Yasuaki| Kunisada, Toshiyuki| Yoshida, Aki| Hashimoto, Yuuri| Onishi, Teppei| Uno, Futoshi| Kagawa, Shunsuke| Urata, Yasuo| Ozaki, Toshifumi| Fujiwara, Toshiyoshi|
Published Date 2013-03
Publication Title Molecular Cancer Therapeutics
Volume volume12
Issue issue3
Content Type Journal Article
Author Sasaki, Tsuyoshi| Tazawa, Hiroshi| Hasei, Jo| Kunisada, Toshiyuki| Yoshida, Aki| Hashimoto, Yuuri| Yano, Shuya| Yoshida, Ryosuke| Uno, Futoshi| Kagawa, Shunsuke| Morimoto, Yuki| Urata, Yasuo| Fujiwara, Toshiyoshi| Ozaki, Toshifumi|
Published Date 2012-08-01
Publication Title 岡山医学会雑誌
Volume volume124
Issue issue2
Content Type Journal Article
Author Mimura, Hidefumi| Fujiwara, Hiroyasu| Hiraki, Takao| Gobara, Hideo| Shibamoto, Kentaro| Kimata, Yoshihiro| Ozaki, Toshifumi| Sasaki, Satoru| Kanazawa, Susumu|
Published Date 2010-04-01
Publication Title 岡山医学会雑誌
Volume volume122
Issue issue1
Content Type Journal Article