| 摘要 |
FIELD: medicine. ^ SUBSTANCE: plate for small fragments of humeral bone head, used for stable fixation, in case of fracture, of bone fragments on head and on the section of diaphysis near humeral bone body contains elongated plate part which has arch-like transverse section, and adjacent to it anatomically formed head part. In plate part and in head part made are holes with conic thread for receiving bone screws which contain screw head with complementary conic thread, ensuring stable angular position when screwed up. In head part a number of symmetrically distributed holes are made. Symmetry axis coincides with longitudinal central plate axis. First external holes in head part are oriented with respect to each other at angle of about 12-17 degrees, preferably 15 degrees. Second internal holes in head part are oriented with respect to each other at smaller angle than external holes in head part, preferably constituting 10 degrees. First and second holes are located with respect to external side of head part at angle to perpendicular to longitudinal plate axis, and preferably there is an additional hole, made on longitudinal central axis on set distance from plate proximal end, angle of inclination of which with respect to perpendicular to plate longitudinal axis is larger than angles of inclination of first and second holes. ^ EFFECT: invention ensures reliable fixation of great number of fragments without undesirable reduction of general plate stability and without complicating surgical intervention. ^ 10 cl, 1 dwg |
