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Biomaterials Translational ›› 2021, Vol. 2 ›› Issue (3): 188-196.doi: 10.12336/biomatertransl.2021.03.003

• REVIEW • Previous Articles     Next Articles

Update on the research and development of magnesium-based biodegradable implants and their clinical translation in orthopaedics

Ying Luo1, Jue Wang2, Michael Tim Yun Ong3, Patrick Shu-hang Yung3, Jiali Wang1,*(), Ling Qin3,*()   

  1. 1 School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong Province, China
    2 Hanglok-Tech Co., Ltd., Zhuhai, Guangdong Province, China
    3 Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and The Chinese University of Hong Kong Shenzhen-Hong Kong Innovation and Technology Institute (Futian), The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
  • Received:2021-06-02 Revised:2021-07-20 Accepted:2021-08-12 Online:2021-09-28 Published:2021-09-28
  • Contact: Jiali Wang,Ling Qin E-mail:wangjli8@mail.sysu.edu.cn;qin@ort.cuhk.edu.hk
  • About author:Ling Qin, qin@ort.cuhk.edu.hk.
    Jiali Wang, wangjli8@mail.sysu.edu.cn;
    First author contact:

    #Author Equally.

Abstract:

Biodegradable magnesium (Mg) or its alloys are desirable materials for development into new-generation internal fixation devices or implants with high biocompatibility, adequate mechanical modulus, and osteopromotive properties, which may overcome some of the drawbacks of the existing permanent orthopaedic implants with regard to stress-shielding of bone and beam-hardening effects on radiographic images. This review summarises the current research status of Mg-based orthopaedic implants in animals and clinical trials. First, detailed information of animal studies including bone fracture repair and anterior cruciate ligament reconstruction with the use of Mg-based orthopaedic devices is introduced. Second, the repair mechanisms of the Mg-based orthopaedic implants are also reviewed. Afterwards, reports of recent clinical cases treated using Mg-based implants in orthopaedics are summarised. Finally, the challenges and the strategies of the use of Mg-based orthopaedic implants are discussed. Taken together, the collected efforts in basic research, translational work, and clinical applications of Mg-based orthopaedic implants over the last decades greatly contribute to the development of a new generation of biodegradable metals used for the design of innovative implants for better treatment of orthopaedic conditions in patients with challenging skeletal disorders or injuries.

Key words: ACL reconstruction, clinical translation, fracture model, magnesium, orthopaedic implants