Knee ligament balancer
AssigneeDePuy Synthes Products, Inc.
InventorsRyan Chessar, James Drummond, Marc E. Ruhling
Life of this patent
Estimating the term…
Abstract
An orthopaedic surgical device comprises a first sensor component and a second sensor component. Each sensor component includes a paddle set to contact a proximal tibia and a distal femur of a patient. The first sensor component and the second sensor component being movable with respect to one another to extend one paddle set beyond the other paddle set, and each paddle set includes cutouts for the clearance of the patellar tendon to avoid the need to avert the patella during use.
Claims20
1-19. (canceled)
A method for balancing a knee, comprising:
- extending posterior ends of a first paddle set beyond posterior ends of a second paddle set,
- inserting the posterior ends of the first paddle set and the second paddle set into a side of the knee without averting a patella of the knee,
- contacting, with the posterior ends of the first paddle set, portions of a proximal tibia and a distal femur that lie away from the side of the knee into which the posterior ends of the first paddle set were inserted, and
- contacting, with the posterior ends of the second paddle set, portions of the proximal tibia and the distal femur that lie toward the side of the knee into which the posterior ends of the second paddle set were inserted.
A method for balancing a knee, comprising:
- extending posterior ends of a first paddle set beyond posterior ends of a second paddle set,
- inserting the posterior ends of the first paddle set and the second paddle set into a medial side of the knee without averting a patella of the knee,
- contacting, with the posterior ends of the first paddle set, portions of a proximal tibia and a distal femur that lie away from the medial side of the knee, and
- contacting, with the posterior ends of the second paddle set, portions of the proximal tibia and the distal femur that lie toward the medial side of the knee.
A method for balancing a knee, comprising:
- extending posterior ends of a first paddle set beyond posterior ends of a second paddle set,
- inserting the posterior ends of the first paddle set and the second paddle set into a lateral side of the knee without averting a patella of the knee,
- contacting, with the posterior ends of the first paddle set, portions of a proximal tibia and a distal femur that lie away from the lateral side of the knee, and
- contacting, with the posterior ends of the second paddle set, portions of the proximal tibia and the distal femur that lie toward the lateral side of the knee.
Dependencies are inferred from the claim text.