We present the new fixation method for RHA(resurfacing hip arthroplasty) endoprostheses by means of the biomimeticmultispiked\r\nconnecting scaffold (MSC-Scaffold). Such connecting scaffold can generate new type of RHA endoprostheses, that is stemless and\r\nfixed entirely without cement. The preprototypes of this MSC-Scaffold were manufactured with modern additive laser additive\r\ntechnology (SLM). The pilot surgical implantations in animal model (two laboratory swine) of MSC-Scaffold preprototypes have\r\nshowed after two months neither implant loosening, migration, and nor other early complications. From the results of performed\r\nhistopathological evaluation of the periscaffold spikes bone tissue and 10-day culture of human osteoblasts (NHOst) we can\r\nconclude that (1) the scaffolding effect was obtained and (2) to improve the osseointegration of the scaffold spikes, their material\r\nsurface should be physicochemically modified (e.g., with hydroxyapatite). Some histopathological findings in the periscaffold\r\ndomain near the MSC-Scaffold spikes bases (fibrous connective tissue and metallic particles near the MSC-Scaffold spikes bases\r\nedges) prompt considering the necessity to optimize the design of the MSC-Scaffold in the regions of its interspike space near the\r\nspikes bases edges, to provide more room for new bone formation in this region and for indispensable post-processing (glass pearl\r\nblasting) after the SLM manufacturing.
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