The Experts below are selected from a list of 8523 Experts worldwide ranked by ideXlab platform

Haruhiko Akiyama - One of the best experts on this subject based on the ideXlab platform.

  • Distal tibial tubercle osteotomy is superior to the proximal one for progression of patellofemoral osteoarthritis in medial opening wedge high tibial osteotomy
    Knee Surgery Sports Traumatology Arthroscopy, 2019
    Co-Authors: Hiroyasu Ogawa, Kazu Matsumoto, Hiroki Yoshioka, Masaya Sengoku, Haruhiko Akiyama
    Abstract:

    Purpose To investigate the effect of proximal tibial tubercle osteotomy (PTO) and distal tibial tubercle osteotomy (DTO) in medial opening wedge high tibial osteotomy on patellofemoral alignment, patellofemoral osteoarthritis and clinical outcomes. Methods PTO ( n  = 41) and DTO ( n  = 43) for the same surgical indications were included. Radiographic measurements of the Caton-Deschamps index, patellar tilt and shift, and arthroscopic cartilage evaluation at the patellofemoral joint were performed at osteotomy and plate removal. The Knee Society Score (KSS) was evaluated preoperatively and at the latest follow-up. Results The follow-up period was longer in the PTO group (33.7 months; range 23–40 years) than in the DTO group (22.2 months; range 18–29 months) ( p  

Hiroyasu Ogawa - One of the best experts on this subject based on the ideXlab platform.

  • Distal tibial tubercle osteotomy is superior to the proximal one for progression of patellofemoral osteoarthritis in medial opening wedge high tibial osteotomy
    Knee Surgery Sports Traumatology Arthroscopy, 2019
    Co-Authors: Hiroyasu Ogawa, Kazu Matsumoto, Hiroki Yoshioka, Masaya Sengoku, Haruhiko Akiyama
    Abstract:

    Purpose To investigate the effect of proximal tibial tubercle osteotomy (PTO) and distal tibial tubercle osteotomy (DTO) in medial opening wedge high tibial osteotomy on patellofemoral alignment, patellofemoral osteoarthritis and clinical outcomes. Methods PTO ( n  = 41) and DTO ( n  = 43) for the same surgical indications were included. Radiographic measurements of the Caton-Deschamps index, patellar tilt and shift, and arthroscopic cartilage evaluation at the patellofemoral joint were performed at osteotomy and plate removal. The Knee Society Score (KSS) was evaluated preoperatively and at the latest follow-up. Results The follow-up period was longer in the PTO group (33.7 months; range 23–40 years) than in the DTO group (22.2 months; range 18–29 months) ( p  

Shuichi Matsuda - One of the best experts on this subject based on the ideXlab platform.

  • excessive flexed position of the femoral component was associated with poor new Knee Society Score after total Knee arthroplasty with the bi surface Knee prosthesis
    Journal of Bone and Joint Surgery-british Volume, 2020
    Co-Authors: Kohei Nishitani, Shinichi Kuriyama, Shinichiro Nakamura, Naoki Umatani, Shuichi Matsuda
    Abstract:

    Aims This study aimed to evaluate the association between the sagittal alignment of the femoral component in total Knee arthroplasty (TKA) and new Knee Society Score (2011KSS), under the hypothesis...

  • the minimum clinically important difference for the japanese version of the new Knee Society Score 2011kss after total Knee arthroplasty
    Journal of Orthopaedic Science, 2019
    Co-Authors: Kohei Nishitani, Shinichi Kuriyama, Shinichiro Nakamura, Yosuke Yamamoto, Moritoshi Furu, Shunichi Fukuhara, Shuichi Matsuda
    Abstract:

    Abstract Background The new Knee Society Score (2011KSS) has been used to evaluate post-operative outcomes after total Knee arthroplasty (TKA). However, there is no minimum clinically important difference (MCID) for 2011KSS. The purpose of this study is to define MCID of 2011KSS after TKA. Methods Patients who underwent primary TKA for primary Knee osteoarthritis between April 2012 and December 2016 were included in the study. The Japanese version of 2011KSS and original Knee Society Score (OKSS) were recorded preoperatively and at one-year postoperatively. With improvement in pain Score of OKSS as an anchor, an anchor-based approach was used to identify the MCID of 2011KSS. The improvement in pain of OKSS was classified into 5 categories. The MCID was determined using a linear regression analysis of delta 2011KSS against improvement in the category of pain in OKSS. The MCID for 2011KSS expectation was not calculated because the items of pre- and post-operative questionnaires were different. Results Five hundred and twenty-two cases were enrolled (age: 74.8 ± 7.3 years, female: 80.0%). After 1-year follow-up, 344 TKAs were finally included (age: 74.6 ± 7.1 years, female: 77.9%). Linear regression analyses showed that MCID for 2011KSS was 1.9 (95% confidential interval (CI): 1.3–2.5) in symptom, 2.2 (95%CI: 1.4–2.9) in satisfaction, and 4.1 (95%CI: 2.5–5.7) in functional activities. Conclusions MCID for 2011KSS was successfully calculated. These MCID values make the 2011KSS a more efficient tool for evaluating the physical activities of the populations of patients undergoing TKA. These MCID values can also be used to calculate sample size to evaluate the power of a study in designing clinical studies.

  • Cross-cultural adaptation and validation of the Japanese version of the new Knee Society Scoring System for osteoarthritic Knee with total Knee arthroplasty
    Journal of Orthopaedic Science, 2015
    Co-Authors: Yosuke Hamamoto, Shinichi Kuriyama, Shinichiro Nakamura, Moritoshi Furu, Masahiro Ishikawa, Masayuki Azukizawa, Shuichi Matsuda
    Abstract:

    Background The purposes of this study were to translate the new Knee Society Score (KSS) into Japanese and to evaluate the construct and content validity, test-retest reliability, and internal consistency of the Japanese version of the new KSS.

  • internal rotation of femoral component affects functional activities after tka survey with the 2011 Knee Society Score
    Journal of Arthroplasty, 2014
    Co-Authors: Shinya Kawahara, Shuichi Matsuda, Ken Okazaki, Hiroyuki Nakahara, Shigetoshi Okamoto, Yukihide Iwamoto
    Abstract:

    Abstract The 2011 Knee Society Knee Scoring System (KSS) was developed as a new patient-derived outcome measure to better characterize satisfaction, expectations, and physical activities after total Knee arthroplasty. The rotational alignment of the femoral and tibial components was assessed with computed tomography in 75 patients (92 Knees), and its effect on the Scores of the KSS was evaluated. Internal rotation of the femoral component relative to the surgical epicondylar axis significantly decreased the Score of functional activities and slightly decreased the Score of satisfaction. Femoral component malrotation did not affect the Scores of symptoms and expectations. Tibial component malrotation did not affect any of the Scores of the 2011 KSS. Surgeons should avoid internal rotation of the femoral component to preserve functional activities.

  • Total Knee arthroplasty following failed high tibial osteotomy: mid-term comparison of posterior cruciate-retaining versus posterior stabilized prosthesis
    Knee Surgery Sports Traumatology Arthroscopy, 2009
    Co-Authors: Yukio Akasaki, Shuichi Matsuda, Hiromasa Miura, Ken Okazaki, Taka Aki Moro-oka, Hideki Mizu-uchi, Yukihide Iwamoto
    Abstract:

    This study evaluated the mid-term results of total Knee arthroplasty (TKA) following high tibial osteotomy (HTO), comparing posterior cruciate-retaining prostheses to posterior stabilized prostheses. The Knee Society Score for the entire group (20 Knees) improved significantly from 62 (median) preoperatively to 87 at the latest follow-up. The postoperative Knee Society Score of 85 in posterior cruciate-retaining prostheses (8 Knees) was significantly inferior to the 94 Score in posterior stabilized prostheses (12 Knees). Of Knee Society Score, Stability and ROM Scores (17 and 21, respectively) in posterior cruciate-retaining TKA were inferior to those in posterior stabilized TKA (25 and 24, respectively). Since postoperative Knee instability due to posterior cruciate ligament (PCL) insufficiency is thought to contribute to the inferior results of posterior cruciate-retaining prostheses after HTO, PCL-substituting TKA would be suitable for use after HTO.

Kazu Matsumoto - One of the best experts on this subject based on the ideXlab platform.

  • Distal tibial tubercle osteotomy is superior to the proximal one for progression of patellofemoral osteoarthritis in medial opening wedge high tibial osteotomy
    Knee Surgery Sports Traumatology Arthroscopy, 2019
    Co-Authors: Hiroyasu Ogawa, Kazu Matsumoto, Hiroki Yoshioka, Masaya Sengoku, Haruhiko Akiyama
    Abstract:

    Purpose To investigate the effect of proximal tibial tubercle osteotomy (PTO) and distal tibial tubercle osteotomy (DTO) in medial opening wedge high tibial osteotomy on patellofemoral alignment, patellofemoral osteoarthritis and clinical outcomes. Methods PTO ( n  = 41) and DTO ( n  = 43) for the same surgical indications were included. Radiographic measurements of the Caton-Deschamps index, patellar tilt and shift, and arthroscopic cartilage evaluation at the patellofemoral joint were performed at osteotomy and plate removal. The Knee Society Score (KSS) was evaluated preoperatively and at the latest follow-up. Results The follow-up period was longer in the PTO group (33.7 months; range 23–40 years) than in the DTO group (22.2 months; range 18–29 months) ( p  

Hiroki Yoshioka - One of the best experts on this subject based on the ideXlab platform.

  • Distal tibial tubercle osteotomy is superior to the proximal one for progression of patellofemoral osteoarthritis in medial opening wedge high tibial osteotomy
    Knee Surgery Sports Traumatology Arthroscopy, 2019
    Co-Authors: Hiroyasu Ogawa, Kazu Matsumoto, Hiroki Yoshioka, Masaya Sengoku, Haruhiko Akiyama
    Abstract:

    Purpose To investigate the effect of proximal tibial tubercle osteotomy (PTO) and distal tibial tubercle osteotomy (DTO) in medial opening wedge high tibial osteotomy on patellofemoral alignment, patellofemoral osteoarthritis and clinical outcomes. Methods PTO ( n  = 41) and DTO ( n  = 43) for the same surgical indications were included. Radiographic measurements of the Caton-Deschamps index, patellar tilt and shift, and arthroscopic cartilage evaluation at the patellofemoral joint were performed at osteotomy and plate removal. The Knee Society Score (KSS) was evaluated preoperatively and at the latest follow-up. Results The follow-up period was longer in the PTO group (33.7 months; range 23–40 years) than in the DTO group (22.2 months; range 18–29 months) ( p