| 摘要 |
The invention concerns an osteosynthesis system essentially characterised in that it comprises a longitudinal plate linking at least two bones and means for making the plate integral with the two bones, said means being constituted by at least two oblong orifices provided in the plate along its longitudinal axis and at least two "pedicular screw-nut" pairs for co-operating with the oblong orifices, each pedicular screw (30) comprising a shank with bone threading (31), a shank with mechanical threading (32) and a screwing head (33) linking together the two shanks, the system comprising two first and second types of pedicular screws, the axes (34, 35) of the two shanks merging in the case of the first type of pedicular screw and forming a non null angle alpha between them in the case of the second type. The plate can comprise two parts (1, 2), each part including interlocking means consisting of respectively female (11) and male (13) threads. The invention is particularly applicable for correcting pathological defects of the backbone such as disk herniation, vertebral fractures, spondylolithesis, cyphosis, lordosis, scoliosis, vertebral instability and others. |
