An apparatus for modifying an intercondylar notch of a patient's femur, comprising: a guide operating to engage a distal end of the patient's femur, the guide including: (i) exterior surfaces and interior surfaces spaced apart from one another by a thickness of the guide, wherein the interior surfaces comprise a distal engagement surface, an anterior engagement surface and a posterior engagement surface configured to engage a distal resection surface, an anterior resection surface and a posterior resection surface, respectively, of the distal end of the patient's femur, (ii) one or more mounting elements operating to engage a distal end of the patient's femur and (iii) a bore extending from one or more of the exterior surfaces to one or more of the interior surfaces of the guide, the bore having an interior surface defining a central longitudinal axis; and a hole saw having a hollow cylinder extending from a hub, and a circular cutting edge at a distal end of the hollow cylinder, wherein: the bore of the guide is sized and shaped to slidingly receive the hollow cylinder of the hole saw therein, and the apparatus is configured such that a portion of material from the intercondylar notch of the patient's femur is removable by the circular cutting edge of the hole saw. a guide operating to engage a distal end of the patient's femur, the guide including: (i) exterior surfaces and interior surfaces spaced apart from one another by a thickness of the guide, wherein the interior surfaces comprise a distal engagement surface, an anterior engagement surface and a posterior engagement surface configured to engage a distal resection surface, an anterior resection surface and a posterior resection surface, respectively, of the distal end of the patient's femur, (ii) one or more mounting elements operating to engage a distal end of the patient's femur and (iii) a bore extending from one or more of the exterior surfaces to one or more of the interior surfaces of the guide, the bore having an interior surface defining a central longitudinal axis; and a hole saw having a hollow cylinder extending from a hub, and a circular cutting edge at a distal end of the hollow cylinder, wherein: the bore of the guide is sized and shaped to slidingly receive the hollow cylinder of the hole saw therein, and (i) exterior surfaces and interior surfaces spaced apart from one another by a thickness of the guide, wherein the interior surfaces comprise a distal engagement surface, an anterior engagement surface and a posterior engagement surface configured to engage a distal resection surface, an anterior resection surface and a posterior resection surface, respectively, of the distal end of the patient's femur, (ii) one or more mounting elements operating to engage a distal end of the patient's femur and (iii) a bore extending from one or more of the exterior surfaces to one or more of the interior surfaces of the guide, the bore having an interior surface defining a central longitudinal axis; and a hole saw having a hollow cylinder extending from a hub, and a circular cutting edge at a distal end of the hollow cylinder, wherein: the bore of the guide is sized and shaped to slidingly receive the hollow cylinder of the hole saw therein, and the bore of the guide is sized and shaped to slidingly receive the hollow cylinder of the hole saw therein, and the apparatus is configured such that a portion of material from the intercondylar notch of the patient's femur is removable by the circular cutting edge of the hole saw.