Osteosynthesis system for vertebra arthrodesis

摘要: The invention concerns an osteosynthesis system for vertebra arthrodesis comprising: at least a distraction or compression bar (1) extending over part of the backbone; anchoring member (2), comprising top end (4) with spherical surface (5) intermediate rod (6) and portion (7); associated each member, common support (10), receiving, coupling locking said bar, first concave housing (15) receiving (1), second (20) (4), threaded means (9, 23) on support, nut (9) to be screwed (11, 12). is characterised in that located outside 12) open sideways upwards, opposite backbone, so blocked by peripheral (9).