Oleksii Sulyma1, Yevhenii Kozik2, Oleksandr Polishchuk3, Mykhailo Pidhaietskyi4, Yuriy Kostogryz5Джерело: Issues of Knee Joint Endoprosthetics in Megadefects Cases: Opportunities and Challenges 1PhD MD, Orthopedic Surgeon, Traumatologist, Biomedical Engineering Laboratory, SI “Institute of Traumatology and