KNEE LIGAMENT BALANCER
First Claim
1. An orthopaedic surgical device, comprisinga first sensor component comprising a first paddle set having a first tibial paddle and a first femoral paddle that extend from the first sensor component in a general direction of extension to respectively contact a proximal tibia and a distal femur of a patient, the first femoral paddle moveable with respect to the first tibial paddle to determine a first displacement between the proximal tibia and the distal femur,a second sensor component coupled to the first sensor component, the second sensor component comprising a second paddle set having a second tibial paddle and a second femoral paddle that extend from the second sensor component in the general direction of extension to respectively contact the proximal tibia and the distal femur of the patient, the second femoral paddle moveable with respect to the second tibial paddle to determine a second displacement between the proximal tibia and the distal femur,wherein the first paddle set and second paddle set are moveable with respect to each other in the general direction of extension to permit selectively extending one of the paddle sets beyond the other paddle set in the general direction of extension.
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Accused Products
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.
135 Citations
20 Claims
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1. An orthopaedic surgical device, comprising
a first sensor component comprising a first paddle set having a first tibial paddle and a first femoral paddle that extend from the first sensor component in a general direction of extension to respectively contact a proximal tibia and a distal femur of a patient, the first femoral paddle moveable with respect to the first tibial paddle to determine a first displacement between the proximal tibia and the distal femur, a second sensor component coupled to the first sensor component, the second sensor component comprising a second paddle set having a second tibial paddle and a second femoral paddle that extend from the second sensor component in the general direction of extension to respectively contact the proximal tibia and the distal femur of the patient, the second femoral paddle moveable with respect to the second tibial paddle to determine a second displacement between the proximal tibia and the distal femur, wherein the first paddle set and second paddle set are moveable with respect to each other in the general direction of extension to permit selectively extending one of the paddle sets beyond the other paddle set in the general direction of extension.
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11. An orthopaedic surgical device, comprising
a first sensor component comprising a first tibial paddle and a first femoral paddle that extend from the first sensor component to respectively contact a first portion of a proximal tibia and a first condyle of a distal femur, the first femoral paddle moveable with respect to the first tibial paddle to determine a first displacement between the first portion of the proximal tibia and the first condyle of the distal femur, a second sensor component comprising a second tibial paddle and a second femoral paddle that extend from the second sensor component to respectively contact a second portion of the proximal tibia and a second condyle of the distal femur, the second femoral paddle moveable with respect to the second tibial paddle to determine a second displacement between the second portion of the proximal tibia and the second condyle of the distal femur, and a sliding mechanism to slideably couple the first sensor component to the second sensor component to permit selectively extending the first tibial and femoral paddles beyond the second tibial and femoral paddles.
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20. 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 tibia and a 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 tibia and the femur that lie toward the side of the knee into which the posterior ends of the second paddle set were inserted.
Specification