Hinged articulating spacer system for revision knee arthroplasty
AssigneeDonald N. Sullivan
InventorDonald N. Sullivan
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Abstract
A hinged articulating spacer system for revision knee arthroplasty includes a femur rod for a femur, and a tibia rod for a tibia. The tibia rod is hingedly couplable to the femur rod to form a hinged rod assembly. A pre-formed femoral spacer component includes bone cement impregnated with an antibiotic. The pre-formed femoral spacer defines an opening that receives the hinged rod assembly. A pre-formed tibial spacer component includes bone cement impregnated with an antibiotic. The pre-formed tibial spacer defines an opening that receives the hinged rod assembly.
Claims18
A hinged articulating spacer system for revision knee arthroplasty comprising:
- a femur rod configured to be inserted into a distal end of a femur;
- a tibia rod configured to be inserted into a proximal end of a tibia, wherein the tibia rod is hingedly coupled to the femur rod to form a hinged rod assembly and enable the tibia rod to rotate relative to the femur rod about a rotational axis;
- a pre-formed femoral spacer component including bone cement impregnated with an antibiotic, the pre-formed femoral spacer component defining an opening through which the hinged rod assembly extends;
- and
- a pre-formed tibial spacer component including bone cement impregnated with an antibiotic, the pre-formed tibial spacer component defining an opening through which the hinged rod assembly extends,
- wherein the pre-formed tibial spacer component is configured to articulate with the pre-formed femoral spacer component as the tibia rod rotates relative to the femur rod about the rotational axis.
Dependencies are inferred from the claim text.