Instruments for total knee arthroplasty

摘要

An instrument assembly for resecting a distal femur for receipt of a knee implant, comprising an intramedullary rod and resection instruments. A valgus portion of the intramedullary rod has series of engagement members positioned to provide a plurality of engagement positions for use in fixing the resection instruments on the valgus portion. The resection instruments are configured to selectively engage and selectively lock on the valgus rod at the engagement positions via the engagement members. The engagement members preferably comprise pairs of substantially vertical indents arranged in parallel along opposing sides of said valgus portions. The resection instruments preferably engages and locks to said engagement members via a sliding rod engagement member. The resection instruments preferably include a distal cut guide having a distal resection slot and a femoral resection block.

主权项

1. A kit, comprising:
a rod having a first portion and a second portion, said first portion including opposed first and second surfaces each having a respective series of engagement members disposed thereon, the engagement members configured to provide a plurality of engagement positions; and a first cutting guide including a body having a first side and a second side that is positioned at an angle with respect to the first side, the first side defining an aperture sized and configured to receive the second portion of the rod therein, the second side defining an engagement track; and a rod engagement member including a pair of spaced apart rail members that are sized and configured to be received within the engagement track defined by the first cutting guide, at least one of the rail members including a rod detent that is configured to be received between a pair of adjacent engagement members of the second portion of the rod when the second portion of the rod is received within the aperture defined by the first cutting guide and when the rod engagement member is disposed within the engagement track defined by the first cutting guide.