Femoral Instrumentation Device
Preparing the Tibial Bone: Attention is turned toward the lower bone, the tibia. The top of the tibia is cut using another customized knee instrumentation device that ensures the alignment is satisfactory.
Tibial Instrumentation Device
Preparing the Patella: If severely damaged, the undersurface of the patella is removed.
Placing the Femoral Component: The metal femoral component is placed on the femur. The metal prosthesis is cut so it matches the taper almost exactly. With a cemented, femoral component, an epoxy cement is used to attach the metal prosthesis to the bone.
Placing the Tibial Components: The metal tray that will hold the polyethylene spacer is attached to the top of the tibia, and the metal tray is cemented into place. The plastic spacer is then attached to the metal tray of the tibial component. If this component wears out while the rest of the artificial knee is sound, it can be replaced.
Placing the Patellar Component: A patella button is sometimes cemented into place behind the patella depending on the degree of arthritis.
The artificial knee replacement is now complete.
Closing the Incision: Nylon stitches or absorbable stitches are used to close the skin.
Components for Knee Replacement Surgery
Implant designs vary in important ways to meet specific patient needs. Restoration of normal knee joint function is the goal of knee replacement surgery. We select the implant based on the patient’s anatomy, degree of looseness of the knee, their range of motion, and their planned sports activities.
The Stone Clinic
Building Better Joints Through Advanced Techniques in Cartilage Replacement, Regeneration and Repair