Tadanao Funakoshi

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BACKGROUND This study was motivated by the need to better understand the tribology of the rotator cuff, as it could provide insights into degenerative processes and suggest therapeutic approaches to cuff disorders. The objective was to evaluate the distribution of a known lubricating protein in the infraspinatus tendon of the rotator cuff in adult goats.(More)
In this study, we hypothesized that hyaluronic acid could provide superior biological effects on the chondrocytes in a three-dimensional culture system. To test this hypothesis, we investigated the in vitro behavior of rabbit chondrocytes on a novel chitosan-based hyaluronic acid hybrid polymer fiber. The goal of the current study was to show the(More)
Reparative strategies for the treatment of injuries to tendons, including those of the rotator cuff of the shoulder, need to address the formation of the cartilage which serves as the attachment apparatus to bone and which forms at regions undergoing compressive loading. Moreover, recent work indicates that cells employed for rotator cuff repair may need to(More)
To clarify the feasibility of using novel chitosan-based hyaluronan hybrid polymer fibers as a scaffold in ligament tissue engineering, their mechanical properties and ability to promote cellular adhesion, proliferation, and extracellular matrix production were studied in vitro. Chitosan fibers and chitosan-based 0.05% and 0.1% hyaluronan hybrid fibers were(More)
BACKGROUND Tissue engineering techniques using biodegradable three-dimensional (3D) scaffolds with cultured cells offer more potential alternatives for the treatment of severe ligament and tendon injuries. In tissue engineering, one of the crucial roles of 3D scaffolds is to provide a temporary template with the biomechanical characteristics of the native(More)
PURPOSE To clarify long-term clinical and radiological results more than 10 years after radial shortening osteotomy for Kienböck disease. METHODS Eleven wrists of 10 patients that had been classified as Lichtman stages 3A (2 wrists), 3B (8 wrists), and 4 (1 wrist) underwent radial shortening for Kienböck disease. The mean follow-up period was 14.3 years(More)
BACKGROUND Disorders of the long head of the biceps (LHB) tendon contribute to anterior shoulder pain. Although LHB tendon disorders are associated with rotator cuff disease, distinguishing between biceps and rotator cuff pathology is difficult. The objective was to identify the predictors of LHB tendon disorders associated with a supraspinatus tear. (More)
BACKGROUND The distribution pattern of subchondral bone density is considered to highly reflect the stress distribution across a joint under long-term physiologic loading conditions. Therefore, the biomechanical characteristics over the elbow joint surface under long-term loading conditions of baseball pitching can be determined by a measurement of the(More)
PURPOSE To evaluate the clinical and radiological results of radiolunate (RL) arthrodesis for rheumatoid arthritis (RA) patients treated with disease-modifying antirheumatic drugs and/or biologicals with an average of 7 years of follow-up. In addition, we compared the results in advanced stages with those in less advanced stages in patients with(More)
PURPOSE The objective of this study was to conduct a follow-up evaluation of an arthroscopic reattachment technique using an avulsed deep component of the triangular fibrocartilage complex (dc-TFCC) from the fovea of the distal ulna (ulnar fovea). METHODS A retrospective study was performed on a consecutive cohort of 12 patients who underwent arthroscopic(More)