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Modular hemipelvic endoprosthesis with a sacral hook: a finite element study.

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  • معلومة اضافية
    • Author-Supplied Keywords:
      Biomechanics
      Finite element analysis
      Hemipelvic prosthesis
      Pelvic tumor
      Sacral hook
    • NAICS/Industry Codes:
      334517 Irradiation Apparatus Manufacturing
    • Abstract:
      Background: A novel hemipelvic endoprosthesis with a sacral hook was introduced previously, and its clinical outcome with midterm follow-up showed decreased prosthesis-related complications, especially decreased rate of aseptic loosening. The aim of present study was to evaluate the role of a sacral hook in prosthesis stability and the biomechanical properties of this hemipelvic endoprosthesis. Methods: A three-dimensional model of the postoperative pelvis was developed using computed tomography (CT) images. A force of 500 N was applied, and the distribution of stress and displacement was evaluated. Comparisons were performed to explore the role of the sacral hook in prosthesis stability. Prosthesis improvement was simulated to reduce unexpected breakage of the pubic connection plate. Results: In the reconstructed hemipelvis, stress distributions were concentrated on the superior area of the acetabulum, sacral connection component, and sacral hook. A maximum stress of 250 MPa was observed at the root of the sacral connection component. The sacral hook reduced the maximum stress and displacement by 14.1% and 32.5%, respectively, when the prosthesis was well fixed and by 10.0% and 42.1%, respectively, when aseptic loosening occurred. Increasing the thickness of the pubic connection plate from 2 to 3.5 mm reduced the maximum stress by 32.0% and 15.8%, respectively. Conclusion: A hemipelvic endoprosthesis with a sacral hook fulfills the biomechanical demands of the hemipelvis and is safe under static conditions. The sacral hook is important for prosthesis stability. Increasing the thickness of the pubic connection plate can reduce the maximum stress and risk of fatigue breakage. [ABSTRACT FROM AUTHOR]
    • Abstract:
      Copyright of Journal of Orthopaedic Surgery & Research is the property of BioMed Central and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
    • Author Affiliations:
      1Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-Sen University, 58#, Zhongshan Road II, 510080, Guangzhou, Guangdong, China
      2Medical Biomechanical Key Laboratory of Guangdong Province, Department of Anatomy, Southern Medical University, Tonghe, 510515, Guangzhou, Guangdong, China
    • ISSN:
      1749-799X
    • Accession Number:
      10.1186/s13018-019-1338-z
    • Accession Number:
      138577560
  • Citations
    • ABNT:
      WANG, B. et al. Modular hemipelvic endoprosthesis with a sacral hook: a finite element study. Journal of Orthopaedic Surgery & Research, [s. l.], v. 14, n. 1, p. N.PAG, 2019. DOI 10.1186/s13018-019-1338-z. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=138577560&custid=s8280428. Acesso em: 28 maio. 2020.
    • AMA:
      Wang B, Sun P, Yao H, et al. Modular hemipelvic endoprosthesis with a sacral hook: a finite element study. Journal of Orthopaedic Surgery & Research. 2019;14(1):N.PAG. doi:10.1186/s13018-019-1338-z.
    • APA:
      Wang, B., Sun, P., Yao, H., Tu, J., Xie, X., Ouyang, J., & Shen, J. (2019). Modular hemipelvic endoprosthesis with a sacral hook: a finite element study. Journal of Orthopaedic Surgery & Research, 14(1), N.PAG. https://doi.org/10.1186/s13018-019-1338-z
    • Chicago/Turabian: Author-Date:
      Wang, Bo, Peidong Sun, Hao Yao, Jian Tu, Xianbiao Xie, Jun Ouyang, and Jingnan Shen. 2019. “Modular Hemipelvic Endoprosthesis with a Sacral Hook: A Finite Element Study.” Journal of Orthopaedic Surgery & Research 14 (1): N.PAG. doi:10.1186/s13018-019-1338-z.
    • Harvard:
      Wang, B. et al. (2019) ‘Modular hemipelvic endoprosthesis with a sacral hook: a finite element study’, Journal of Orthopaedic Surgery & Research, 14(1), p. N.PAG. doi: 10.1186/s13018-019-1338-z.
    • Harvard: Australian:
      Wang, B, Sun, P, Yao, H, Tu, J, Xie, X, Ouyang, J & Shen, J 2019, ‘Modular hemipelvic endoprosthesis with a sacral hook: a finite element study’, Journal of Orthopaedic Surgery & Research, vol. 14, no. 1, p. N.PAG, viewed 28 May 2020, .
    • MLA:
      Wang, Bo, et al. “Modular Hemipelvic Endoprosthesis with a Sacral Hook: A Finite Element Study.” Journal of Orthopaedic Surgery & Research, vol. 14, no. 1, Sept. 2019, p. N.PAG. EBSCOhost, doi:10.1186/s13018-019-1338-z.
    • Chicago/Turabian: Humanities:
      Wang, Bo, Peidong Sun, Hao Yao, Jian Tu, Xianbiao Xie, Jun Ouyang, and Jingnan Shen. “Modular Hemipelvic Endoprosthesis with a Sacral Hook: A Finite Element Study.” Journal of Orthopaedic Surgery & Research 14, no. 1 (September 11, 2019): N.PAG. doi:10.1186/s13018-019-1338-z.
    • Vancouver/ICMJE:
      Wang B, Sun P, Yao H, Tu J, Xie X, Ouyang J, et al. Modular hemipelvic endoprosthesis with a sacral hook: a finite element study. Journal of Orthopaedic Surgery & Research [Internet]. 2019 Sep 11 [cited 2020 May 28];14(1):N.PAG. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=138577560&custid=s8280428