Bioinspired porous hip implants design: A systematic review of mechanical testing and additive manufacturing
In clinical practice, the current medical device for total hip arthroplasty is made of a solid structural material. Unfortunately, stress shielding is developed as a result of the materials used in solid hip implants being stiffer than the surrounding bone, which can lead to hip implant failure. The...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024019510 |
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| Summary: | In clinical practice, the current medical device for total hip arthroplasty is made of a solid structural material. Unfortunately, stress shielding is developed as a result of the materials used in solid hip implants being stiffer than the surrounding bone, which can lead to hip implant failure. Therefore, many researchers devised a complex lattice structure embedded in the implant in order to address the aforementioned issues. However, the developed implant must undergo mechanical testing to ensure the model's reliability, as this approach can simulate the physiological conditions of human daily activities such as standing, walking, running, and leaping. In addition, the manufacturing method of the implant plays a significant role in ensuring that the procedure does not inhibit the mechanical properties and bone ingrowth of the model, as the porous lattice structure is extremely difficult to manufacture. This article reviewed the most recent mechanical tests conducted on porous hip implants constructed using additive manufacturing (AM), highlighting the boundary conditions, loading conditions, advantages, and disadvantages of the testing and AM methods. In conclusion, the use of lattice structure as well as the implementation of additive manufacturing processes for porous hip implant development are promising methods in terms of mechanical properties (31–62% better than conventional). Nevertheless, further in-vivo study should be conducted to check the reliability of porous implant when treating femoral bone. |
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| ISSN: | 2590-1230 |