| 摘要 |
PURPOSE: A spinal rod/plate locking mechanism is provided to provide a surgical method and an anchor assembly for anchoring a rod member or a connecting member such as a cable used for fixing or reducing a fractured or damaged part of bone. CONSTITUTION: An anchor assembly for spinal fixation comprises an anchor plate(2) configured to anchor centrally on a skull below the external occipital protuberance and having first and second arms extending to sides thereof, and at least one bolt(12) having a slot configured to capture and clamp a fixation member. The bolt is affixed to an arm forming a unitary and non-separating assembly with the anchor plate for one piece installation, the bolt being freely rotatable before clamping for positioning to receive the fixation member. The anchor plate is a Y-shaped plate comprising a central trunk portion and a pair of angled arm portions. The plate has an elongated aperture through which the bolt fits from one side and extends through the other side, the bolt being adjustably positionable along the length of the elongated aperture before clamping.
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