期刊
MATERIALS
卷 14, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/ma14051069
关键词
high hydrostatic pressure; mechanical characterization; uniaxial compression test; bone substitutes; allograft; bone regeneration
类别
资金
- European Social Fund (ESF) [ESF/14-BM-A55-0012/18]
- Ministry of Education, Science and Culture of MecklenburgVorpommern, Germany
The study found that using high hydrostatic pressure treatment does not have a negative impact on the mechanical properties of allogeneic bone substitutes, making it a suitable alternative processing technique.
One main disadvantage of commercially available allogenic bone substitute materials is the altered mechanical behavior due to applied material processing, including sterilization methods like thermal processing or gamma irradiation. The use of high hydrostatic pressure (HHP) might be a gentle alternative to avoid mechanical alteration. Therefore, we compressed ground trabecular human bone to granules and, afterwards, treated them with 250 and 300 MPa for 20 and 30 min respectively. We characterized the formed bone granule cylinders (BGC) with respect to their biomechanical properties by evaluating stiffness and stress at 15% strain. Furthermore, the stiffness and yield strength of HHP-treated and native human trabecular bone cylinders (TBC) as control were evaluated. The mechanical properties of native vs. HHP-treated TBCs as well as HHP-treated vs. untreated BGCs did not differ, independent of the applied HHP magnitude and duration. Our study suggests HHP treatment as a suitable alternative to current processing techniques for allogenic bone substitutes since no negative effects on mechanical properties occurred.
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