"Radioactivity" . "Knee ligaments" . "Radiation protection" . "Biomechanics" . "Mutagens" . "Knee treatments" . "Radiobiology" . "Motor control" . "Tendons" . "Transplantation medicine" . "Immunology" . "Radiation health effects" . "Soft tissue" . "Skeletal system" . "Ionizing radiation" . "Carcinogens" . "Orthopedic surgical procedures" .