The strength of bone-metal block for different types of implants surfaces under the conditions of normal bone and osteoporosis in rats Journal title: Orthopaedics, Traumatology and Prosthetics Authors: Volodymyr Filipenko, Mykhaylo Karpinsky, Olena Karpinska, Mandus Akonjom, Stanislav Bondarenko Subject(s): Internal Medicine, Orthopedics, Medicine, Research & Experimental