A novel reinforced PLA locking compression plate to eliminate stress shielding using design for additive manufacturing

Autor: Abdulsalam A. Al-Tamimi, Mehdi Tlija, Abdullah Alhamidi, Mustufa Haider Abidi, Abdulrahman Al-Ahmari, Saeed M. Al-Zahrani
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Materials Research and Technology, Vol 32, Iss , Pp 2127-2139 (2024)
Druh dokumentu: article
ISSN: 2238-7854
DOI: 10.1016/j.jmrt.2024.08.056
Popis: Orthopaedic trauma is a predominant cause of patient mortality and prompt surgical interventions. The locking compression plate (LCP) is widely regarded as a gold standard in treating bone fractures. However, current fixation materials, such as 316 L stainless steel (316 L SS) and titanium (Ti) alloys induce stress shielding. A novel design approach is considered to design the next generation of bone plates to minimize stress shielding through design for additive manufacturing principles. Embedding of 316 L SS sheets within the bone plate structure has improved the mechanical properties by 200% compared with PLA-only plate, resulting in a flexural modulus of 9.3 GPa, which is closer to the cortical bone range of 10–25 GPa. In contrast, commercial plates measured 51 GPa for Ti and 112 GPa for 316 L SS. The novel plates showed to have a lower economic and environmental impact than commercial ones. Additively manufactured bone plates are more sustainable and cost-effective than current commercial ones.
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