FIELD: medicine.
SUBSTANCE: medical bone screw, namely, transpedicular type screw, contains a threaded rod that has a distal front plot with a small constant core diameter at a certain length and a proximal rear plot with a big constant core diameter at a certain length, with the screw head located on the proximal end. The cross-sectional shape of the core along the distal front plot with a small constant core diameter at a certain length is made noncircular, and the cross-sectional shape of the core along the distal front plot with a big constant core diameter at a certain length is made circular.
EFFECT: reliable and long-lasting introduction of greater forces into the patient's bone with higher secondary stability relative to the rotation forces.
10 cl, 8 dwg
