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US 12,648,776 B2Granted
Apparatus and method for positioning an orthopaedic instrument
AssigneeDePuy Synthes Products, Inc.
InventorsBryan Rose, Jeffrey R. Roose, Luke J. Aram, Dimitri Sokolov
Life of this patent
Estimating the term…
Abstract
A number of orthopaedic surgical instruments are disclosed. A method, apparatus, and system for fabricating such instruments are also disclosed. In some embodiments, an orthopaedic instrument assembly may include a femoral cutting block configured to receive a portion of a distal femur of a patient and a ligament balancer secured to the femoral cutting block.
Claims20
An orthopaedic instrument assembly, comprising:
- a femoral cutting block having (i) a negative contour surface that is configured to receive a portion of a distal femur of a patient that has a corresponding contour, and (ii) a cutting guide configured to guide a cutting tool to perform a resection of the distal femur of the patient, and
- a ligament balancer comprising a bracket having a first end releasably secured to the femoral cutting block, wherein the ligament balancer has (i) a tibial base plate, and (ii) a pair of femoral paddles each of which is movable relative to the tibial base plate, and wherein the first end of the bracket has guide pin holes defined therein that are configured to receive guide pins secured into the distal femur of the patient.
A method of performing an orthopaedic surgical procedure on a knee joint of a patient, the method comprising:
- inserting a portion of a ligament balancer between a femur of the patient and a tibia of the patient,
- operating the ligament balancer to rotate the femur with respect to the tibia,
- securing a femoral cutting block to the femur using a pair of guide pins, wherein the pair of guide pins are also received in a pair of apertures of the ligament balancer to releasably couple the femoral cutting block to the ligament balancer, and
- moving a cutting tool along a cutting guide of the femoral cutting block to perform a resection of the femur.
1 more element
An orthopaedic instrument assembly comprising:
- a plurality of guide pins configured to be secured into a femur of a patient,
- a ligament balancer comprising a medial femoral paddle configured to be positioned between a tibia of the patient and a medial condyle of the femur, a lateral femoral paddle configured to be positioned between the tibia and a lateral condyle of the femur, and a bracket extending away from the medial and lateral femoral paddles to a free end formed to include apertures configured to receive the plurality of guide pins, and
- a femoral cutting block configured to be positioned on the femur, wherein the femoral cutting block is formed to include (i) guide holes configured to receive the plurality of guide pins to secure the femoral cutting block to the femur during a resection of the femur and (ii) a cutting guide configured to guide a cutting tool to perform the resection of the femur.
Dependencies are inferred from the claim text.