Author Okazaki, Yuki| Furumatsu, Takayuki| Kamatsuki, Yusuke| Okazaki, Yoshiki| Masuda, Shin| Hiranaka, Takaaki| Kodama, Yuya| Miyazawa, Shinichi| Ozaki, Toshifumi|
Keywords Anterior cruciate ligament Lateral meniscus Posterior root tear Transtibial pullout repair Meniscus extrusion
Note This fulltext is available in Apr. 2021.|
Published Date 2020-04-08
Publication Title Orthopaedics & Traumatology: Surgery & Research
Volume volume106
Issue issue3
Publisher Elsevier
Start Page 469
End Page 473
ISSN 1877-0568
Content Type Journal Article
language 英語
File Version Author
PubMed ID 32278734
DOI 10.1016/j.otsr.2019.10.022
Web of Science KeyUT 000539660200014
Related Url isVersionOf https://doi.org/10.1016/j.otsr.2019.10.022
FullText URL OTSR105_1_113.pdf Fig.pdf
Author Okazaki, Yuki| Furumatsu, Takayuki| Kodama, Yuya| Hino, Tomohito| Kamatsuki, Yusuke| Okazaki, Yoshiki| Masuda, Shin| Miyazawa, Shinichi| Endo, Hirosuke| Tetsunaga, Tomonori| Yamada, Kazuki| Ozaki, Toshifumi|
Keywords Magnetic resonance imaging Medial meniscus Posterior root tear Tibial rotation Transtibial pullout repair
Published Date 2019-02-28
Publication Title Orthopaedics & Traumatology: Surgery & Research
Volume volume105
Issue issue1
Publisher Elsevier
Start Page 113
End Page 117
ISSN 18770568
Content Type Journal Article
language 日本語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 30482466
DOI 10.1016/j.otsr.2018.10.005
Web of Science KeyUT 000456541300019
Related Url isVersionOf https://doi.org/10.1016/j.otsr.2018.10.005
JaLCDOI 10.18926/AMO/57713
FullText URL 73_6_495.pdf
Author Masuda, Shin| Furumatsu, Takayuki| Okazaki, Yoshiki| Kamatsuki, Yusuke| Okazaki, Yuki| Kodama, Yuya| Hiranaka, Takaaki| Nakata, Eiji| Ozaki, Toshifumi|
Abstract Medial meniscus posterior root tear causes rapid knee cartilage degradation by inducing posteromedial displacement of the medial meniscus. We evaluated medial meniscus posterior extrusion before and after pullout repair for medial meniscus posterior root tear using magnetic resonance images. Twenty-eight patients with symptomatic medial meniscus posterior root tear were included. The inclusion criteria were: acute (< 3 months) or chronic (≥3 months) medial meniscus posterior root tear after painful popping events. The exclusion criteria were: other meniscus and anterior cruciate ligament injuries. We measured medial meniscus posterior extrusion and medial meniscus anteroposterior interval at knee flexion angles of 10° and 90° preoperatively and at 3 months postoperatively. The posterior extrusion at 90° knee flexion decreased from 4.42±1.38 mm preoperatively to 3.09±1.06 mm (p<0.001) postoperatively, while at 10° knee flexion it was −4.17±1.63 mm preoperatively and −3.77±1.72mm postoperatively, showing no significant change. The anteroposterior interval at 10° knee flexion increased from 19.74±4.27 mm preoperatively to 22.15±5.10 mm postoperatively (p<0.001); at 90° knee flexion, it increased from 16.81±4.51 mm preoperatively to 19.20±4.30 mm postoperatively (p<0.001). Medial meniscus posterior extrusion and movement decreased after pullout repair. Pullout repair for medial meniscus posterior root tear improves medial meniscus posterior extrusion, especially at 90° knee flexion.
Keywords medial meniscus posterior root tear pullout repair extrusion open magnetic resonance imaging
Amo Type Original Article
Published Date 2019-12
Publication Title Acta Medica Okayama
Volume volume73
Issue issue6
Publisher Okayama University Medical School
Start Page 495
End Page 501
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2019 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 31871331
Web of Science KeyUT 000503431400004
JaLCDOI 10.18926/AMO/57715
FullText URL 73_6_511.pdf
Author Takahara, Yasuhiro| Furumatsu, Takayuki| Nakashima, Hirotaka| Itani, Satoru| Nakamura, Makoto| Uchida, Yoichiro| Kato, Hisayoshi| Tsujimura, Yoshitaka| Iwasaki, Yuichi| Ochi, Nobuaki|
Abstract Medial open- and lateral closed-wedge high tibial osteotomy (hybrid CWHTO) can overcome the limitations of conventional CWHTO and open-wedge HTO (OWHTO) for medial compartmental osteoarthritis (OA) of the knee. Hybrid CWHTO increases stability by using a rigid locking plate and allows early full weight-bearing. However, the literature contains no information about time to bone union after this new procedure. The aim of this study is to evaluate the time to bone union after hybrid CWHTO. We reviewed 44 knees treated with hybrid CWHTO. Patients were able to stand on both legs on the day after surgery and walked with full weight-bearing within 4 weeks of the procedure. The time to achievement of bone union at the osteotomy site was defined as the number of months until bone union was confirmed on radiographic imaging. The mean time to radiographic confirmation of bone union was 4.5±1.5 months after surgery. Eleven knees (25.0%) required 6 months or more. Radiographic analysis and JOA score improved significantly between before and 1 year after surgery (p<0.01). Hybrid CWHTO is a very useful method for treating medial OA, but radiographic bone union requires 4.5 months on average. We must be aware of bone union after hybrid CWHTO.
Keywords bone union hybrid closed-wedge high tibial osteotomy osteoarthritis
Amo Type Original Article
Note ,|
Published Date 2019-12
Publication Title Acta Medica Okayama
Volume volume73
Issue issue6
Publisher Okayama University Medical School
Start Page 511
End Page 516
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2019 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 31871333
Web of Sience KeyUT 000503431400006
FullText URL J_Orthop_Sci_22_4_715.pdf fig.pdf
Author Lu, Zhichao| Furumatsu, Takayuki| Fujii, Masataka| Maehara, Ami| Ozaki, Toshifumi|
Keywords vascular endothelial growth factor (VEGF) meniscus meniscal injury hypoxia-inducible factor-1α (HIF-1α)
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 715
End Page 721
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 28318650
DOI 10.1016/j.jos.2017.02.006
Web of Sience KeyUT 000407394700022
Related Url isVersionOf https://doi.org/10.1016/j.jos.2017.02.006
JaLCDOI 10.18926/AMO/57714
FullText URL 73_6_503.pdf
Author Kamatsuki, Yusuke| Furumatsu, Takayuki| Miyazawa, Shinichi| Kodama, Yuya| Hino, Tomohito| Okazaki, Yoshiki| Masuda, Shin| Okazaki, Yuki| Noda, Tomoyuki| Yamakawa, Yasuaki| Tetsunaga, Tomoko| Ozaki, Toshifumi|
Abstract Clinical studies have demonstrated that transtibial pullout repair led to favorable midterm outcomes in patients with medial meniscus posterior root tears (MMPRTs) although medial meniscal extrusion (MME) continued to be present. It has been unclear whether these residual postoperative MMEs existed after the pullout repair or had progressed at the very short-term evaluation after surgery. We sought to determine which characteristics of patients with MMPRTs influence the incidence of postoperative MME. The cases of 23 patients whose date of injury was known were analyzed. All patients underwent MMPRT pullout fixation. Preoperative and 3-month postoperative magnetic resonance imaging (MRI) examinations were performed. MME was retrospectively assessed on the mid-coronal plane of MRI scans. The preoperative and postoperative MME values were 4.2±1.2 mm and 4.3±1.5 mm, respectively (p=0.559). Pullout repair surgery was performed significantly earlier after the MMPRT-specific injury in patients whose postoperative MME improved compared to the patients whose MME did not improve (p<0.001). Our findings demonstrated that an early transtibial pullout repair of an MMPRT was more effective in reducing MME than a late repair. Surgeons should not miss the optimal timing for the pullout repair of an MMPRT, considering the period from the injury and the preoperative MME.
Keywords medial meniscus posterior root tear pullout repair medial meniscus extrusion magnetic resonance imaging
Amo Type Original Article
Published Date 2019-12
Publication Title Acta Medica Okayama
Volume volume73
Issue issue6
Publisher Okayama University Medical School
Start Page 503
End Page 510
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2019 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 31871332
Web of Sience KeyUT 000503431400005
Author Furumatsu, Takayuki| Matsumoto, Emi| Kanazawa, Tomoko| Fujii, Masataka| Lu, Zhichao| Kajiki, Ryotaro| Ozaki, Toshifumi|
Published Date 2013-05-31
Publication Title Journal of Biomechanics
Volume volume46
Issue issue9
Content Type Journal Article
JaLCDOI 10.18926/AMO/57947
FullText URL 74_1_7.pdf
Author Sanki, Tomoaki| Endo, Hirosuke| Tetsunaga, Tomonori| Furumatsu, Takayuki| Yamada, Kazuki| Ozaki, Toshifumi|
Abstract We investigated the relationship between the initial contact status and stress shielding in total hip arthroplasty (THA) using fit-and-fill type straight-stem implants. In addition we evaluated the clinical and radiographic outcomes. Subjects were 100 hips of 94 patients who underwent THA and were followed-up for ≥10 years. Contact areas with the femoral cortical bone were investigated according to the zonal distribution of Gruen using postoperative CT images. Depending on the number of contact areas, the patients were classified into high contact [HC], medium contact [MC], and low contact [LC] groups. Radiographic and clinical outcomes were evaluated. In the HC group (20 hips), severe stress shielding was observed in 12 hips, which was statistically significant (p=0.008). In the LC group (29 hips), mild stress shielding was observed in 27 hips which was statistically significant (p<0.001). No significant differences were observed among the 3 groups in clinical outcomes, Harris hip score (p=0.719) or Japanese Orthopedic Association (JOA) score (p=0.301). In insertion of cementless collared fit-and-fill type straight-stem implants, severe late stress shielding of the femoral bone may occur if high contact of the femoral component is achieved. However, the degree of stress shielding does not result in adverse clinical outcomes.
Keywords fit-and-fill stress shielding cementless straight stem total hip arthroplasty
Amo Type Original Article
Published Date 2020-02
Publication Title Acta Medica Okayama
Volume volume74
Issue issue1
Publisher Okayama University Medical School
Start Page 7
End Page 15
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2020 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 32099243
Author Furumatsu, Takayuki| Ozaki, Toshifumi| Asahara, Hiroshi|
Published Date 2010-08-02
Publication Title 岡山医学会雑誌
Volume volume122
Issue issue2
Content Type Journal Article
Author Hiranaka, Takaaki| Furumatsu, Takayuki| Okazaki, Yuki| Yamawaki, Tadashi| Okazaki, Yoshiki| Kodama, Yuya| Kamatsuki, Yusuke| Ozaki, Toshifumi|
Keywords Medial meniscus Posterior root tear Bilateral injury Predictor Medial tibial slope Sensitivity and specificity
Note This is a post-peer-review, pre-copyedit version of an article published in Knee Surgery, Sports Traumatology, Arthroscopy. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00167-020-06079-1. </br>This fulltext is available in June 2021.|
Published Date 2020-06-01
Publication Title Knee Surgery, Sports Traumatology, Arthroscopy
Publisher Springer
ISSN 0942-2056
NCID AA10973641
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version Author
PubMed ID 32488369
DOI 10.1007/s00167-020-06079-1
Web of Science KeyUT 000538465000003
Related Url isVersionOf https://doi.org/10.1007/s00167-020-06079-1
Author Furumatsu, Takayuki| Ozaki, Toshifumi| Asahara, Hiroshi|
Published Date 2009-05
Publication Title The International Journal of Biochemistry & Cell Biology
Volume volume41
Issue issue5
Content Type Journal Article
Author Furumatsu, Takayuki| Shukunami, Chisa| Amemiya-Kudo, Michiyo| Shimano, Hitoshi| Ozaki, Toshifumi|
Published Date 2010-01
Publication Title The International Journal of Biochemistry & Cell Biology
Volume volume42
Issue issue1
Content Type Journal Article
FullText URL J_Orthop_Sci_21_4_524.pdf fig.pdf
Author Furumatsu, Takayuki| Maehara, Ami| Ozaki, Toshifumi|
Note This is an Accepted Manuscript of an article published by Elsevier|
Published Date 2016-07
Publication Title Journal of Orthopaedic Science
Volume volume21
Issue issue4
Publisher Elsevier
Start Page 524
End Page 529
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 27113646
DOI 10.1016/j.jos.2016.02.013
Web of Science KeyUT 000381142800020
Related Url isVersionOf https://doi.org/10.1016/j.jos.2016.02.013
FullText URL Knee26_3_653.pdf tables.pdf Fig.pdf
Author Furumatsu, Takayuki| Okazaki, Yuki| Kodama, Yuya| Okazaki, Yoshiki| Masuda, Shin| Kamatsuki, Yusuke| Takihira, Shota| Hiranaka, Takaaki| Yamawaki, Tadashi| Ozaki, Toshifumi|
Keywords Clinical outcome Medial meniscus Meniscal healing Posterior root tear Transtibial pullout repair
Published Date 2019-06-30
Publication Title The Knee
Volume volume26
Issue issue3
Publisher Elsevier
Start Page 653
End Page 659
ISSN 09680160
NCID AA10996272
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2019 Elsevier B.V. All rights reserved.
File Version author
PubMed ID 30902517
DOI 10.1016/j.knee.2019.02.007
Web of Science KeyUT 000474504500017
Related Url isVersionOf https://doi.org/10.1016/j.knee.2019.02.007
JaLCDOI 10.18926/AMO/54818
FullText URL 70_6_515.pdf
Author Fujii, Masataka| Furumatsu, Takayuki| Kadota, Yasutaka| Shimamura, Yoshinobu| Tsuchimochi, Shigeyuki| Ozaki, Toshifumi|
Abstract The present report describes the first known, case of a pseudoaneurysm of the perforating branch of the deep femoral artery following anterior cruciate ligament (ACL) reconstruction. A 19-year-old man underwent ACL reconstruction using the outside-in femoral tunnel-creation method. Seven days after the surgery, he complained of abnormal thigh pain and had swelling with local heat on the distal lateral thigh. Magnetic resonance imaging, computed tomography, and color Doppler ultrasonography showed the pseudoaneurysm in the thigh. Resection surgery was successfully performed by a vascular surgeon 12 days after ACL reconstruction. Careful examination and awareness of postoperative symptoms such as thigh pain and swelling after ACL reconstruction were critical for the early diagnosis of pseudoaneurysm.
Keywords pseudoaneurysm perforating branch of the deep femoral artery anterior cruciate ligament
Amo Type Case Report
Published Date 2016-12
Publication Title Acta Medica Okayama
Volume volume70
Issue issue6
Publisher Okayama University Medical School
Start Page 515
End Page 518
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 28003680
Author Hiranaka, Takaaki| Furumatsu, Takayuki| Kamatsuki, Yusuke| Sugiu, Kazuhisa| Okazaki, Yoshiki| Masuda, Shin| Okazaki, Yuki| Takihira, Shota| Miyazawa, Shinichi| Nakata, Eiji| Ozaki, Toshifumi|
Note This fulltext will be available in Nov 2020 |
Published Date 2019-08-20
Publication Title Journal of Orthopaedic Science
Volume volume24
Issue issue6
Publisher Elsevier
Start Page 1058
End Page 1063
ISSN 09492658
NCID AA11052566
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2019 The Japanese Orthopaedic Association. Published by Elsevier B.V. All rights reserved.
File Version author
PubMed ID 31444009
DOI 10.1016/j.jos.2019.08.001
Web of Science KeyUT 000496202800019
Related Url isVersionOf https://doi.org/10.1016/j.jos.2019.08.001
Author Kamatsuki, Yusuke| Furumatsu, Takayuki| Hiranaka, Takaaki| Okazaki, Yoshiki| Okazaki, Yuki| Kodama, Yuya| Hino, Tomohito| Masuda, Shin| Miyazawa, Shinichi| Ozaki, Toshifumi|
Keywords Medial meniscus Posterior root tear Pullout repair Tibial tunnel Meniscus extrusion Three-dimensional CT
Note This fulltext is available in May 2021.|
Published Date 2020-05-25
Publication Title Knee Surgery, Sports Traumatology, Arthroscopy
Publisher Springer
ISSN 09422056
NCID AA10973641
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 32451621
DOI 10.1007/s00167-020-06070-w
Web of Science KeyUT 000535430500004
Related Url isVersionOf https://doi.org/10.1007/s00167-020-06070-w
JaLCDOI 10.18926/AMO/32013
FullText URL fulltext.pdf
Author Ohzawa, Seiya| Takahara, Yasuhiro| Furumatsu, Takayuki| Inoue, Hajime|
Abstract <p>The authors analyzed the 5-year and 9-year survival in 134 of 165 patients who underwent total knee arthroplasties from 1989 to 1996 in our department. Patients were followed until December 31, 1998, or until the time of death. Diagnoses were rheumatoid arthritis in 81 patients (132 knees) and osteoarthritis in 53 patients (79 knees). The survival of the patients was compared to that of the age- and sex-adjusted general population. Kaplan-Meier survival curves were constructed. Twenty-two patients in the study died before the end of the follow-up. The cumulative 5-year patient survival was 88.7%, and 9-year patient survival was 64.4% for total knee arthroplasty patients. The standardized mortality ratio was 0.11 (95% confidence interval: 0.02-0.40) for the patients with osteoarthritis, and 0.81 (95% confidence interval: 0.52-1.25) for the patients with rheumatoid arthritis. The Cox proportional hazards model showed that the factors of male sex and rheumatoid arthritis were related to a higher mortality rate in the total knee arthroplasty group.</p>
Keywords total knee authroplasy patient survival rheumatoid arthritis
Amo Type Article
Published Date 2001-11
Publication Title Acta Medica Okayama
Volume volume55
Issue issue5
Publisher Okayama University Medical School
Start Page 295
End Page 299
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 11688953
Web of Science KeyUT 000171635400006
JaLCDOI 10.18926/AMO/30974
FullText URL fulltext.pdf
Author Ikuma, Hisanori| Abe, Nobuhiro| Uchida, Youichiro| Furumatsu, Takayuki| Fujiwara, Kazuo| Nishida, Keiichiro| Ozaki, Toshifumi|
Abstract <p>Instability of the knee after the medial collateral ligament (MCL) injury is usually assessed with the manual valgus stress test, even though, in recent years, it has become possible to apply magnetic resonance imaging (MRI) to the assessment of the damage of the ligament. The valgus instability of 24 patients (12 isolated injuries and 12 multiple ligament injuries) who suffered MCL injury between 1993 and 1998 was evaluated with the Hughston and Eilers classification, which involves radiographic assessment under manual valgus stress to the injured knees. We developed a novel system for classifying the degree of injury to the MCL by calculating the percentage of injured area based on MRI and investigated the relationship between this novel MRI classification and the magnitude of valgus instability by the Hughston and Eilers classification. There was a significant correlation between the 2 classifications (p=0.0006). On the other hand, the results using other MRI based classification systems, such as the Mink and Deutsch classificaiton and the Petermann classification, were not correlated with the findings by the Hughston and Eilers classification in these cases (p0.05). Since MRI is capable of assessing the injured ligament in clinical practice, this novel classification system would be useful for evaluating the stability of the knee and choosing an appropriate treatment following MCL injury.</p>
Keywords medial collateral ligament magnetic resonance imaging knee instability novel method
Amo Type Original Article
Published Date 2008-06
Publication Title Acta Medica Okayama
Volume volume62
Issue issue3
Publisher Okayama University Medical School
Start Page 185
End Page 191
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 18596835
Web of Science KeyUT 000257130300006
FullText URL KSSTA27_2_361.pdf Figs.pdf Table.pdf
Author Okazaki, Yoshiki| Furumatsu, Takayuki| Miyazawa, Shinichi| Kodama, Yuya| Kamatsuki, Yusuke| Hino, Tomohito| Masuda, Shin| Ozaki, Toshifumi|
Keywords Anterior cruciate ligament reconstruction Flexed-knee position Medial meniscus Meniscal repair Open magnetic resonance imaging Posterior shift
Published Date 2018-09-24
Publication Title Knee Surgery, Sports Traumatology, Arthroscopy
Volume volume27
Issue issue2
Publisher Springer
Start Page 361
End Page 368
ISSN 0942-2056
NCID AA10973641
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 30251100
DOI 10.1007/s00167-018-5157-2
Web of Science KeyUT 000460315200005
Related Url isVersionOf https://doi.org/10.1007/s00167-018-5157-2