Titanium Implants and Local Drug Delivery Systems Become Mutual Promoters in Orthopedic Clinics

Nanomaterials

Weilin Zhang¹  Yan Cui¹  Qin Li¹  Wei Zhao¹  Zhiyu Zhang¹  Yun Gao¹  Duoyi Zhao¹  Meng Wu¹  Chengbin Ma¹  Xiao Ma¹ 

[1] The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China;

关键词: titanium implants;    local drug delivery system;    bone regeneration;    drug effect;    titanium processing technology;   

DOI  :  10.3390/nano12010047

来源: DOAJ

【 摘 要 】

Titanium implants have always been regarded as one of the gold standard treatments for orthopedic applications, but they still face challenges such as pain, bacterial infections, insufficient osseointegration, immune rejection, and difficulty in personalizing treatment in the clinic. These challenges may lead to the patients having to undergo a painful second operation, along with increased economic burden, but the use of drugs is actively solving these problems. The use of systemic drug delivery systems through oral, intravenous, and intramuscular injection of various drugs with different pharmacological properties has effectively reduced the levels of inflammation, lowered the risk of endophytic bacterial infection, and regulated the progress of bone tumor cells, processing and regulating the balance of bone metabolism around the titanium implants. However, due to the limitations of systemic drug delivery systems—such as pharmacokinetics, and the characteristics of bone tissue in the event of different forms of trauma or disease—sometimes the expected effect cannot be achieved. Meanwhile, titanium implants loaded with drugs for local administration have gradually attracted the attention of many researchers. This article reviews the latest developments in local drug delivery systems in recent years, detailing how various types of drugs cooperate with titanium implants to enhance antibacterial, antitumor, and osseointegration effects. Additionally, we summarize the improved technology of titanium implants for drug loading and the control of drug release, along with molecular mechanisms of bone regeneration and vascularization. Finally, we lay out some future prospects in this field.

【 授权许可】

Unknown