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Shintaro Honda,Satoshi Ota,Shinnosuke Yamashita,Tadashi Yasuda 대한골다공증학회 2022 Osteoporosis and Sarcopenia Vol.8 No.1
Objectives: Fragility fractures of the pelvis (FFP) commonly occur in the frail elderly. Displacement in the posterior pelvic ring is recognized as the key sign of instability. This study aims to elucidate the relationship between computer tomography (CT)-based frailty markers and displacement of the posterior pelvic ring within 7 days after injury. Methods: This retrospective study included 49 patients (42 females, 7 males) with FFP (type I 10, type II 24, type III 12, type IV 3). On a CT slice at the level of the third lumbar vertebra, skeletal muscle area, skeletal muscle radiation attenuation, and skeletal muscle index (SMI) were calculated as sarcopenia markers. Osteopenia was measured with trabecular region of interest attenuation technique on the same CT slice. Results: There was no difference in the demographics between non-displaced and displaced FFP. CT-based data showed that patients with FFP had osteopenia. However, no difference was found between non-displaced and displaced FFP. SMI was higher in FFP types III/IV than non-displaced FFP when CT-based data on sarcopenia were compared among all patients. Female patients with FFP demonstrated similar results. Logistic regression analysis using the demographics and CT-based markers on sarcopenia and osteopenia revealed that SMI was a potential determinant of displacement of the posterior pelvic ring fractures. Conclusions: There was inverse association between sarcopenia and displacement of the posterior pelvic ring in the early phase of FFP. Relatively preserved muscle may develop displacement in the elderly with osteopenia.
Development of Industrial Robot System with 5th Generation Mobile Communication System
Atsuki Yokota,Sora Honda,Kei Yamafuku,Takeshi Nishida,Takeshi Ikenaga,Naoki Mori,Akira Matsunaga,Kakeru Maruyama,Kyohiro Yoshida,Shintaro Osada 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
We experimented the configuration of a 5th generation mobile communication system (5G) for factory automation (FA) systems consisting of industrial robots and three-dimensional measurement sensors. We examined the configuration of system components, on the basis of which we developed an experimental FA system. In addition, we confirmed that the need for communication lines is eliminated as 5G greatly reduces the production preparation time when rearranging the parts of the developed FA system.