Spacer block
AssigneeZimmer, Inc.
InventorsJason S. Toler, Shanon N. Roberts
Life of this patent
Estimating the term…
Abstract
A knee arthroplasty system for use in a patient's knee joint comprises a spacer block instrument including a base portion, a tibial component extending from the base portion and configured for placement against a tibia, and a femoral component configured for placement against a femur. The femoral component is rotatably coupled to the tibial component. The system further includes one or more spacer block shims structured for removable attachment to the tibial component.
Claims20
A knee arthroplasty system for use in a patient's knee joint, the knee joint including a tibia and a femur, the system comprising:
- a spacer block instrument including a base portion, a tibial component extending from the base portion and configured for placement against a tibia, and a femoral component configured for placement against a femur, the femoral component being rotatably coupled to the tibial component;
- and
- one or more spacer block shims structured for removable attachment to the tibial component.
A method of using a knee arthroplasty instrument to evaluate a resected knee joint, the method comprising:
- observing a resection gap between a distally resected femur and a proximally resected tibia;
- selecting a first spacer block shim from a plurality of spacer block shims;
- attaching the first spacer block shim to a tibial component of the knee arthroplasty instrument;
- inserting the knee arthroplasty instrument into the resection gap, including positioning the tibial component and attached first spacer block shim adjacent to the proximally resected tibia and positioning a femoral component of the knee arthroplasty instrument adjacent to the distally resected femur, the femoral component being rotatable relative to the tibial component;
- and
- evaluating tension in the resected knee joint, including determining a first joint angle formed between the tibial component and the femoral component.
Dependencies are inferred from the claim text.