Patent ID: 7618421

Claim:
An apparatus for use during arthroplasty for guiding the resection of a bone having a long axis, comprising: an anchoring pin for anchoring the apparatus to the bone, said anchoring pin oriented transversely to the long axis of the bone; a first cam lock having a rod member at a first end and a split bore at a second end for slidably and rotationally receiving the pin, a diameter of the split bore being reduced by actuation of a first cam lever forming part of the first cam lock; a first split tubular member having a bore with a first longitudinal axis, a second cam lock located at a first end of the first split tubular member, the rod member slidably and rotationally received within the bore at a first end of the first split tubular member, a diameter of the first split tubular member bore reduced by the actuation of a second cam lever forming part of the second cam lock; a third cam lock located at the second end of the first split tubular member, a diameter of the first split tubular member bore at a second end thereof reduced by the actuation of a third cam lever forming part of the third cam lock, a positioning guide having a rod thereon mounted in the second end of the first split tubular member and locked in the bore by the third cam lock, the positioning guide having a track thereon extending in a plane perpendicular to the longitudinal axis of the first split tubular member bore, the track having a fourth cam lock, the track slidably receiving an element having a fifth cam lock having a second split tubular member having a bore capable of being reduced by actuation of a fifth cam lever, the element having the fifth cam lock is slidable on the track along a plane perpendicular to the longitudinal axis of the first split tubular member and capable of being locked in the track by the fourth cam lock, a guide having a rod slidably mounted in the second split tubular member bore and capable of being locked in the bore of the fifth cam lock by the fifth cam lever, the guide slidable in a plane parallel to the plane of the track and perpendicular to the first longitudinal axis of the split tubular member, the second direction perpendicular to the first direction, said apparatus providing six degrees of freedom, wherein said six degrees of freedom include three rotations and three orthogonal translations.