研究者詳細 - 齊藤　英知

肩関節造影MRI（MRA）にはガドリニウム（Gd）造影剤が希釈されて用いられる．2014年頃から線状型Gd造影剤の脳内貯留や腎性全身性線維症の危険性が報告され構造が安定している環状型製剤の使用が推奨されている．今回環状型であるガドブトロール（GBCA）の希釈率を変えてMRAでの至適希釈率を調べたので報告する．まず模型で希釈率を14倍から2000倍まで変えて投与し，結果を踏まえ被験者に75倍から300倍で投与した．その上で画像のコントラストノイズ比（CNR）を計測した．被験者は75倍が1名（27歳男性），150倍が4名（17-78歳男性），300倍が2名（17歳女性と67歳男性）だった．模型での画像ではCNRが希釈率14倍では4.8から200倍で599.4と希釈率を高めると向上した．その後400倍から1000倍までは592.8から600.2とプラトーに達し2000倍にすると387.8と低下した．被験者の画像では希釈率75倍でCNRが86.7と低かったが150倍で平均152.1，300倍では平均157.2と安定していた．MRAではGBCAを150-300倍に希釈するのが望ましい．

DOI CiNii Research

Evaluation of anteroposterior accelerometric change after bi-cruciate stabilized total knee arthroplasty and posterior stabilized total knee arthroplasty

Tomite T.

Knee ( Knee ) 32 121 - 130 2021年10月 [査読有り]

研究論文（学術雑誌）

DOI

A new double level osteotomy procedure to restore a joint line and joint angles in severe varus osteoarthritis. - Double level osteotomy associated with tibial condylar valgus osteotomy (DLOTO) -

Saito H.

Asia-Pacific Journal of Sports Medicine, Arthroscopy, Rehabilitation and Technology ( Asia-Pacific Journal of Sports Medicine, Arthroscopy, Rehabilitation and Technology ) 24 9 - 13 2021年04月 [査読有り]

研究論文（学術雑誌）

DOI

Diagnostic Accuracy of the Mobile Assessment of Varus Thrust Using Nine-axis Inertial Measurement Units

Tsukamoto Hiroaki, Saito Kimio, Matsunaga Toshiki, Iwami Takehiro, Saito Hidetomo, Kijima Hiroaki, Akagawa Manabu, Komatsu Akira, Miyakoshi Naohisa, Shimada Yoichi

Progress in Rehabilitation Medicine ( 公益社団法人日本リハビリテーション医学会 ) 6 ( 0 ) n/a 2021年 [査読有り]

研究論文（学術雑誌）

Objectives: The purpose of this study was to clarify the diagnostic accuracy of the mobile assessment of varus thrust using inertial measurement units (IMUs).Methods: A total of 80 knees in 49 patients were enrolled in this study. On visual analysis of gait to determine the presence or absence of varus thrust, 23 knees were assigned to the Present group, 17 to the Ambiguous group, and 40 to the Absent group. The peak knee varus angular velocities (PVVs), measured by quantitative gait analysis using nine-axis IMUs, were compared between these three groups. A receiver operating characteristic curve for the relationship between the visual assessment of varus thrust (Present and Ambiguous) and the measured PVV was created, and the cut-off PVV for visualized varus thrust was determined as the highest point for both sensitivity and specificity.Results: The mean PVVs were significantly different between the three groups (Present, 47.7 ± 8.2 degree/s, Ambiguous, 34.1 ± 10.5 degree/s, and Absent, 28.1 ± 8.3 degree/s, respectively, ANOVA P=0.000). The PVV cut-off value for visualized varus thrust was 28.1 degree/s, yielding a sensitivity of 0.957 and a specificity of 0.579.Conclusions: A PVV <28.1 degree/s is useful for ruling out varus thrust during gait. This quantitative varus thrust assessment method using IMUs has clinical utility as a screening test.

DOI PubMed CiNii Research

Successful treatment of a habitual patellar dislocation after a total knee arthroplasty with a closing-wedge distal femoral varus osteotomy and medial patello-femoral ligament reconstruction

Saito H.

Journal of Experimental Orthopaedics ( Journal of Experimental Orthopaedics ) 7 ( 1 ) 2020年12月 [査読有り]

研究論文（学術雑誌）

DOI

Effectiveness of circular hexapod external fixation with soft tissue reconstruction in treating severe knee dislocation due to burn scarring: A case report

Nozaka K.

BMC Musculoskeletal Disorders ( BMC Musculoskeletal Disorders ) 21 ( 1 ) 2020年09月 [査読有り]

研究論文（学術雑誌）

DOI

Short-Term Results of Hybrid Closed-Wedge High Tibial Osteotomy: A Case Series with a Minimum 3-Year Follow-up

Hidetomo Saito, Kimio Saito, MD, Yoichi Shimada, Toshiaki Yamamura, Shin Yamada, Takahiro Sato, Koji Nozaka, Hiroaki Kijima, and Naohisa Miyakoshi

Knee Surgery and Related Research20180400 2018年04月 [査読有り]

研究論文（学術雑誌）国内共著

Arthroscopic Quadriceps Tendon Repair: Two Case Reports

Hidetomo Saito, Yoichi Shimada, Toshiaki Yamamura, Shin Yamada, Takahiro Sato, Koji Nozaka, Hiroaki Kijima, and Kimio Saito

Case Reports in Orthopedics 2012年02月 [査読有り]

研究論文（学術雑誌）国内共著

Location of the Hill-Sachs lesion in shoulders with recurrent anterior dislocation

Hidetomo Saito · Eiji Itoi · Hiroshi Minagawa · Nobuyuki Yamamoto · Yilihamu Tuoheti · Nobutoshi Seki

Archives of Orthopaedic and Trauma Surgery 2009年06月 [査読有り]

研究論文（学術雑誌）国内共著

Location of the Glenoid Defect in Shoulders With Recurrent Anterior Dislocation

Hidetomo Saito,* MD, Eiji Itoi,*† MD, Hiroyuki Sugaya,‡ MD, Hiroshi Minagawa,* MD, Nobuyuki Yamamoto,* MD, and Yilihamu Tuoheti,* MD

American Journal of Sports Medicine 2005年06月 [査読有り]

研究論文（学術雑誌）国内共著

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