Surgical universal positioning block and tool guide

摘要

A computer assisted total knee replacement surgery system comprising: a positioning block being fastenable to a bone element by a fastener, the position and orientation of the positioning block relative to the fastener, and therefore relative to the bone element, being adjustable following engagement of the fastener with the bonet element; means for determining the position and orientation of the positioning block relative to the bone element; the positioning block having a reference surface and being operatively engageable with a cutting tool; means for identifying a desired position of the positioning block relative to the bone element, such that the reference surface is located in a position relative to the bone element whereby the cutting tool, disposed in a known position relative to the reference surface, is located in a selected position relative to the bone element, such that a cut can be made in the bone element at the selected position; and a display for indicating when the desired position of the positioning block is reached.