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  • Hindawi Limited  (3)
  • Wang, Guohui  (3)
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  • Hindawi Limited  (3)
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  • 1
    In: Pain Research and Management, Hindawi Limited, Vol. 2021 ( 2021-12-1), p. 1-6
    Abstract: Background. High tibial osteotomy (HTO) is used to treat medial degeneration of the osteoarthritis (OA) knee. However, shortcomings still exist in the current procedure, like unprecise creation, inability to correct knee rotation, and internal fixed failure. Here, we reported a novel procedure: patient-specific 3D-printed plates for opening wedge high tibial osteotomy (OWHTO) combined with Taylor spatial frame (TSF). The detailed technique was described, and the clinical outcomes were evaluated. Methods. We prospectively evaluate outcomes of patient-specific 3D-printed plates for OWHTO with use of TSF in 25 patients with knee OA and varus alignment. Postoperative efficacy was evaluated using the HSS knee score, pain visual simulation score (VAS), and knee joint motion (ROM), and lower limb alignment was evaluated by measuring femorotibial angle (FTA) and hip-knee-ankle (HKA). Results and Conclusion. All patients did not experience complications such as wound infection, nerve damage, or bone amputation. 25 patients were followed up for 6–18 months. The bony union at bone amputation was achieved in 3 months after surgery, and the pain symptoms were significantly alleviated or disappeared. The VAS score was significantly reduced in 6 months after surgery compared with preoperative; the HSSS score was significantly added in 6 months after surgery compared with preoperative. The ROM of knee joint increased significantly 6 months after operation compared with that before operation, and the difference was statically significant ( P 〈 0.05 ). The FTA and HKA after operation were significantly superior to that before operation, and the difference was statically significant ( P 〈 0.01 ). Conclusions. Our study showed that patient-specific 3D-printed plates for HTO with the use of TSF have the advantages of small trauma, few complications, simple operation, and fast recovery in treating knee OA and varus alignment.
    Type of Medium: Online Resource
    ISSN: 1918-1523 , 1203-6765
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2021
    detail.hit.zdb_id: 2048409-4
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  • 2
    Online Resource
    Online Resource
    Hindawi Limited ; 2020
    In:  International Journal of Optics Vol. 2020 ( 2020-05-29), p. 1-12
    In: International Journal of Optics, Hindawi Limited, Vol. 2020 ( 2020-05-29), p. 1-12
    Abstract: Object shape reconstruction from images has been an active topic in computer vision. Shape-from-shading (SFS) is an important approach for inferring 3D surface from a single shading image. In this paper, we present a unified SFS approach for surfaces of various reflectance properties using fast eikonal solvers. The whole approach consists of three main components: a unified SFS model, a unified eikonal-type partial differential image irradiance (PDII) equation, and fast eikonal solvers for the PDII equation. The first component is designed to address different reflectance properties including diffuse, specular, and hybrid reflections in the imaging process of the camera. The second component is meant to derive the PDII equation under an orthographic camera projection and a single distant point light source whose direction is the same as the camera. Finally, the last component is targeted at solving the resultant PDII equation by using fast eikonal solvers. It comprises two Godunov-based schemes with fast sweeping method that can handle the eikonal-type PDII equation. Experiments on several synthetic and real images demonstrate that each type of the surfaces can be effectively reconstructed with more accurate results and less CPU running time.
    Type of Medium: Online Resource
    ISSN: 1687-9384 , 1687-9392
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2020
    detail.hit.zdb_id: 2583298-0
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  • 3
    Online Resource
    Online Resource
    Hindawi Limited ; 2020
    In:  International Journal of Energy Research Vol. 44, No. 14 ( 2020-11), p. 11323-11344
    In: International Journal of Energy Research, Hindawi Limited, Vol. 44, No. 14 ( 2020-11), p. 11323-11344
    Type of Medium: Online Resource
    ISSN: 0363-907X , 1099-114X
    URL: Issue
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2020
    detail.hit.zdb_id: 1480879-1
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