Patent ID: 8147496
Filing Date: 2012-04-03
Classification: A61B

Abstract:
1. A positioning block for use in knee surgery comprising: a rotational mounting element being removably engageable to a substrate surface by a multi-axial fastener such that the rotational mounting element is selectively rotatable relative to the substrate surface about at least two substantially perpendicular axes of rotation; a guide body portion being engaged with the rotational mounting element such that the guide body portion is translatable relative thereto along at least a proximal-distal axis, while being rotationally fixed relative to the rotational mounting element such that the guide body portion and the rotational mounting element rotate together relative to the substrate surface, and wherein the guide body portion is thereby moveable relative to the substrate surface in at least three degrees of freedom, the three degrees of freedom including at least two rotational degrees of freedom and at least one translational degree of freedom; and a trackable member fastened to the guide body portion, the tracking member being identified and tracked in three dimensional space by a computer assisted surgical system such as to determine at least an orientation and movement of the guide body portion in three dimensional space.