FEMORAL MILLING INSTRUMENTATION FOR USE IN TOTAL KNEE ARTHROPLASTY WITH OPTIONAL CUTTING GUIDE ATTACHMENT

摘要

The milling instrumentation of this invention providesa milling guide connected to the femur for accommodating amilling device. The milling instrumentation includes analignment guide which is used by the surgeon to set a femoralbracket or base on the medial and lateral sides of the exposedfemur adjacent its distal end. Once the brackets are set, thealignment guide is removed and a milling guide is connectedto the bases. The milling guide establishes a series ofreference planes each including a slot. A powered millingdevice having a burr connected thereto is guided by the slotsalong the reference planes to accurately mill away a portionof the bone. The milling device includes a bobbin-shaped tipwhich positively engages the slots to ensure that the millingdevice is held substantially perpendicular to the referenceplanes of the milling guide. If necessary, otherinstrumentation may be connected to the femoral bases whichwould form a common connection point for the additionalinstruments thereby ensuring alignment between the variousinstruments. Optionally, a one piece cutting guide may beconnected to the bases to allow resection of the bone by astandard oscillating saw blade. The cutting guide includesa plurality of slots such that all the cuts required for thefemur can be made with one cutting guide without reorientingthe guide.