Patent ID: 7182767

Claim:
A resection instrument system for preparing the distal femur for receiving a prosthetic femoral component comprising: a resection guide block first portion for mounting on the medial or lateral side of the femur having an anterior surface and a distal surface connected by an angled surface, said distal surface having a first coupling element, said angled surface having a second coupling element and said anterior surface having a third coupling element; a resection guide block second portion for mounting on a resected distal surface of the femur having a coupling element for engaging the first coupling element on the distal surface of said first portion; a releasable resection tool guide having a laterally or medially facing cutting tool guide surface releasably mounted on said resection block, first portion via said coupling element; an anterior referencing instrument for contacting the anterior femur having a coupling element engageable with the third coupling element on said anterior surface of said first portion for coupling said referencing instrument to said first portion; and an optical tracker mounting element having a coupling element engageable with at least one of said first portion coupling elements for coupling said tracker mounting element thereto.