Faculty Profiles - NAKAHARA Ryuuichi

Papers - NAKAHARA Ryuuichi

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関節リウマチによる高度手関節変形に対して手関節全固定術あるいは人工手関節置換術を行った8例の術後経過

市川千夏, 西田圭一郎, 志水紀之, 浪花崇一, 堀田佳史, 中原龍一, 那須義久, 尾崎敏文

関節の外科 50 ( 2 ) 122 - 122 2023

関節リウマチ患者に対するSauve-Kapandji法の臨床成績の検討

志水紀之, 西田圭一郎, 市川千夏, 浪花崇一, 中原龍一, 那須義久, 尾崎敏文

関節の外科 50 ( 2 ) 121 - 121 2023

MRIにて大腿骨と腸骨に骨髄浮腫がみられた下肢の線状強皮症の1例

佐藤志帆, 梶田藍, 山崎修, 中原龍一, 森実真

西日本皮膚科 84 ( 6 ) 521 - 525 2022.12

Five cases of atypical ulnar fractures associated with long-term bisphosphonate use: An anatomical and mechanical analysis using a finite element model.

Shunji Okita, Taichi Saito, Norio Yamamoto, Yusuke Mochizuki, Ryuichi Nakahara, Yasunori Shimamura, Toshiyuki Kunisada, Keiichiro Nishida, Toshifumi Ozaki

Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association 2022.11

Japanese version of Patient-Rated Elbow Evaluation is a useful outcome measure that potentially reflects hand function in patients with rheumatoid arthritis who underwent total elbow arthroplasty. Reviewed International journal

Ryozo Harada, Keiichiro Nishida, Yoshiyuki Matsuyama, Kenzo Hashizume, Takuro Wada, Yoshihisa Nasu, Ryuichi Nakahara, Masahiro Horita, Masuo Senda, Toshifumi Ozaki

Modern rheumatology 32 ( 6 ) 1041 - 1046 2022.10

Language：English Publishing type：Research paper (scientific journal)

OBJECTIVE: We examined the relationship between The Japanese version of Patient-Related Elbow Evaluation (PREE-J) and other established subjective and objective outcome measures in Japanese patients with rheumatoid arthritis (RA) who underwent total elbow arthroplasty (TEA). PATIENTS AND METHODS: This study involved 46 elbows of 40 RA patients. We collected clinical data one year after surgery, including the PREE-J, the Mayo Elbow Performance Score (MEPS), Disability of the Arm, Shoulder, and Hand (DASH), and Hand20. The correlation and responsiveness to PREE-J were evaluated compared with other outcome measures pre-and postoperatively. RESULTS: Almost all outcome measures were improved significantly after surgery. Preoperative PREE-J was significantly correlated with preoperative DASH, Hand20, and MEPS. Interestingly, postoperative PREE-J did not correlate with postoperative MEPS. Multiple regression analyses revealed that preoperative grip strength (B = -0.09; 95% CI -0.17 to -0.01, p = 0.03) and preoperative Hand20 (B = 0.31, 95% CI 0.03 - 0.58, p = 0.03) were significant factors those might influenced the postoperative PREE-J. CONCLUSIONS: The PREE-J was shown to correlate well with other preoperative outcome measures among the RA patients included in the current study. The postoperative PREE-J after TEA was influenced by the preoperative grip strength and function of the hand.

DOI： 10.1093/mr/roab100

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両側の人工肘関節置換術術後に異所性骨化を生じた1例

志水紀之, 浪花崇一, 堀田佳史, 中原龍一, 那須義久, 西田圭一郎, 尾崎敏文

中国・四国整形外科学会雑誌 34 ( 3 ) 406 - 406 2022.10

AIを用いた超音波画像同一断面自動保存機能の開発

中原龍一, 西田圭一郎, 那須義久, 堀田佳史, 浪花崇一, 尾崎敏文

中国・四国整形外科学会雑誌 34 ( 3 ) 375 - 375 2022.10

両側の人工肘関節置換術術後に異所性骨化を生じた1例

志水紀之, 浪花崇一, 堀田佳史, 中原龍一, 那須義久, 西田圭一郎, 尾崎敏文

日本関節病学会誌 41 ( 3 ) 165 - 165 2022.9

関節リウマチにおけるMCP人工指関節再置換術の短期成績

浪花崇一, 堀田佳史, 志水紀之, 中原龍一, 那須義久, 尾崎敏文, 西田圭一郎

日本関節病学会誌 41 ( 3 ) 167 - 167 2022.9

DevOpsを用いた機械学習・医療アプリケーションの開発効率の改善

中原龍一, 西田圭一郎, 高橋康, 那須義久, 原田遼三, 堀田佳史, 浪花崇一, 尾崎敏文

日本整形外科学会雑誌 96 ( 8 ) S1796 - S1796 2022.9

AIと診断・治療 AIによる骨肉腫X線読影システムの偽陽性対策

長谷井嬢, 中原龍一, 藤原智洋, 中田英二, 国定俊之, 木浪陽, 藤原一夫, 臼井正明, 尾崎敏文

日本整形外科学会雑誌 96 ( 8 ) S1741 - S1741 2022.9

Risk Factors for Infection Following Operative Treatment of Traumatic Upper Extremity Amputation Injury. International journal

Taichi Saito, Takenori Uehara, Ryuichi Nakahara, Yasunori Shimamura, Atsunori Nakao, Toshifumi Ozaki

The journal of hand surgery Asian-Pacific volume 27 ( 4 ) 691 - 697 2022.8

Language：English Publishing type：Research paper (scientific journal)

Background: Identification of the risk factors for surgical site infection (SSI) can be a straightforward and cost-effective measure to reduce or prevent the occurrence of SSI. However, there are no studies that revealed risk factors for SSI for traumatic upper extremity amputation. The aim of this study is to investigate the risk factors that promote SSI after surgery for traumatic upper extremity amputation using a large nationwide database. Methods: We used data from the Japan Trauma Data Bank. Diagnoses were defined using the Abbreviated Injury Scale code. We applied multivariate logistic regression to evaluate the infection risk factor. We chose age, sex, vital signs, cause and type of trauma, concomitant injury, diabetes, amputation level, Glasgow coma scale, Injury Severity Score (ISS) and blood transfusion within 24 hours following hospital arrival as confounders. Receiver operating characteristic (ROC) curve analysis was adopted to identify thresholds for change in infection risk. We also applied propensity score (PS) matching to adjust for confounding factors that may affect the outcome. Results: A total of 1,150 patients (967 males, 183 females) had traumatic upper extremity amputation. The mean patient age was 46.5 years. A total of 21 patients (1.8%) suffered from SSI. ISS, blood transfusion, systolic blood pressure (BP) and the upper extremity amputation except for finger were identified as the independent significant risk factors for SSI occurrence by the multivariate analysis (p < 0.05, p < 0.005, p < 0.05 and p < 0.005, respectively). ROC modelling revealed that patients with ISS of over 9 or systolic BP of over 160 had a risk for SSI. After PS matching, the patients with blood transfusion or systolic BP of over 160 had a significantly higher risk of infection (OR 9.0; p = 0.01 and OR 7.0; p = 0.03, respectively). Conclusions: In treating patients with these risk factors, we must be especially careful in performing thorough debridement and wound care. Level of Evidence: Level II (Therapeutic).

DOI： 10.1142/S2424835522500709

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人工知能による骨肉腫X線読影システムの開発と骨端線認識への挑戦

長谷井嬢, 中原龍一, 国定俊之, 中澤慎二, 韓昌煕, 藏品豊, 木浪陽, 藤原一夫, 臼井正明, 尾崎敏文

日本整形外科学会雑誌 96 ( 6 ) S1333 - S1333 2022.6