Wu Kailun, Li Bin, Guo Jiong Jiong
Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou 215000, China.
Department of Orthopedics, Suzhou Dushuhu Public Hospital (Dushuhu Public Hospital Affiliated to Soochow University), Suzhou 215000, China.
Materials (Basel). 2021 Jan 1;14(1):176. doi: 10.3390/ma14010176.
The development of crack patterns is a serious problem affecting the durability of orthopedic implants and the prognosis of patients. This issue has gained considerable attention in the medical community in recent years. This literature focuses on the five primary aspects relevant to the evaluation of the surface cracking patterns, i.e., inappropriate use, design flaws, inconsistent elastic modulus, allergic reaction, poor compatibility, and anti-corrosiveness. The hope is that increased understanding will open doors to optimize fabrication for biomedical applications. The latest technological issues and potential capabilities of implants that combine absorbable materials and shape memory alloys are also discussed. This article will act as a roadmap to be employed in the realm of orthopedic. Fatigue crack growth and the challenges associated with materials must be recognized to help make new implant technologies viable for wider clinical adoption. This review presents a summary of recent findings on the fatigue mechanisms and fracture of implant in the initial period after surgery. We propose solutions to common problems. The recognition of essential complications and technical problems related to various approaches and material choices while satisfying clinical requirements is crucial. Additional investigation will be needed to surmount these challenges and reduce the likelihood of fatigue crack growth after implantation.
裂纹模式的发展是一个严重问题，影响着骨科植入物的耐久性和患者的预后。近年来，这个问题在医学界受到了相当大的关注。本文献聚焦于与表面裂纹模式评估相关的五个主要方面，即使用不当、设计缺陷、弹性模量不一致、过敏反应、兼容性差以及抗腐蚀性。希望增进了解将为优化生物医学应用的制造打开大门。还讨论了结合可吸收材料和形状记忆合金的植入物的最新技术问题和潜在能力。本文将作为骨科领域的路线图。必须认识到疲劳裂纹扩展以及与材料相关的挑战，以帮助使新的植入技术能够在更广泛的临床应用中可行。本综述总结了术后初期植入物疲劳机制和骨折的最新研究结果。我们提出了常见问题的解决方案。在满足临床要求的同时，认识到与各种方法和材料选择相关的基本并发症和技术问题至关重要。需要进行更多研究来克服这些挑战，并降低植入后疲劳裂纹扩展的可能性。
