Search

Your search keyword '"Tanaka, Yoshinari"' showing total 449 results
Start Over Author "Tanaka, Yoshinari"
449 results on '"Tanaka, Yoshinari"'

9. Association of Stability and Size of Unhealed Area With Failure After Internal Fixation for Osteochondritis Dissecans Lesions of the Knee: Radiological Evaluation Using Computed Tomography

Author

Hiramatsu, Kunihiko, primary, Yonetani, Yasukazu, additional, Tanaka, Yoshinari, additional, Kita, Keisuke, additional, Amano, Hiroshi, additional, Kanamoto, Takashi, additional, Tachibana, Yuta, additional, Kinugasa, Kazutaka, additional, and Horibe, Shuji, additional

Published
2024
Full Text
View/download PDF

28. Rectangular bone-patellar tendon bone grafts reduce early graft failure in chronic ACL-Deficient knees.

Author

Tanaka, Yoshinari, Tachibana, Yuta, Kinugasa, Kazutaka, Takao, Rikio, Kita, Keisuke, Amano, Hiroshi, Yonetani, Yasukazu, Shiozaki, Yoshiki, Uchida, Ryohei, and Horibe, Shuji

Subjects
*BONE grafting, *PATELLAR tendon, *LOGISTIC regression analysis, *ANTERIOR cruciate ligament surgery, *TENDONS, *ODDS ratio
Abstract

The aim of this study was to assess early graft failure after anterior cruciate ligament (ACL) reconstruction according to chronicity of ACL deficiency (ACLD) and clarify predisposing factors. A total of 731 patients who underwent anatomic ACL reconstruction were divided into 3 groups based on chronicity of ACLD: <6 months (Group 1), 6 months to 2 years (Group 2), and >2 years (Group 3). Types of ACL grafts used included single-bundle hamstring tendon (HT), multiple-bundle HT, and rectangular bone-patellar tendon-bone (BTB) grafts. Preoperatively and immediately postoperatively, lateral radiographs in full extension were taken to examine anterior tibial subluxation (ATS). All ACL grafts were evaluated by MRI at 6 months to identify graft failure. The group with the highest failure rate was further examined to compare possible risk factors between the intact and failure subgroups, followed by multivariate logistic regression analysis to identify predisposing factors. Early graft failure on MRI without any episode of postoperative trauma was observed in 7 (1.4%), 2 (1.8%), and 11 (9.2%) patients in Groups 1, 2, and 3, respectively, with a significantly higher rate in Group 3 (P < 0.001). Of the 119 patients in Group 3, significant differences were observed between intact and failure subgroups with regard to surgical procedure (P = 0.03), chondral lesions (P < 0.01), and preoperative ATS (P < 0.01). Multivariate logistic regression analysis revealed that surgical procedures (odds ratio, 3.8; 95%CI, 1.16–12.59) and preoperative ATS (odd ratio, 2.4; 95%CI, 1.26–4.38) were predisposing factors of early graft failure. Patients with ACLD for >2 years experienced early graft failure with an incidence rate of 9.2%. Predisposing factors of early graft failure in these patients included the use of single-bundle HT grafts and preoperative ATS. The use of rectangular BTB grafts resulted in a lower graft failure rate. Case Series. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

40. Autologous Osteochondral Transplantation in Full-thickness Patella Chondral Lesion: A Case Series

Author

Yonetani, Yasukazu, Tanaka, Yoshinari, Kanamoto, Takashi, Nakamura, Norimasa, Nakata, Ken, and Horibe, Shuji

Subjects
Normal patellofemoral alignment, Autologous osteochondral transplantation, Case Report, Focal patella cartilage lesion
Abstract

Purpose: Autologous osteochondral transplantation (AOT) in the focal cartilage lesion of the patella has been reported with less successful results compared with other sites. The purposes were to investigate the clinical outcomes of AOT for focal patellar chondral lesion without patellofemoral instability. Methods: Between 2001 and 2007, six patients (five males and one female) with a focal patellar cartilage lesion without patellofemoral malalignment and instability were treated with AOT. The mean age was 38 (27–51) years. Intraoperatively, the size and location of lesion were assessed by international cartilage repair society classification. Lysholm score was investigated preoperatively, at 6 months, 1- and 2-year, and final follow-up. Mean follow-up period was 51 months (24–101). Transplanted grafts were evaluated by magnetic resonance imaging (MRI) and second-look arthroscopy. Results: The mean size was 133mm2(78–225). All six cases improved at final follow-up (Lysholm score 79–100). Although immediate pain relief obtained in four cases, severe pain was persistent in remaining two cases during the 1styear and gradually relieved by 2 years following surgery. The size of these two cases was significantly larger (over 170 mm2) than that of four cases (100 mm2 in average) (P

Published
2019

Catalog

Books, media, physical & digital resources
See catalog results