The knee replacement consists of three parts ( components ):
� Femoral component — metal piece that caps the end of the femur and has a groove , which allows the kneecap to move up and down as the knee bends and straightens .
� Tibial component — flat piece of metal with a plastic plate that covers the top of the tibia .
� Patellar component — dome-shaped piece of plastic that allows it to glide smoothly over the new knee .
Partial or Unicompartmental (“ Uni ”) Knee Replacement
A unicompartmental knee replacement may be an option when only one compartment of the knee needs to be replaced :
� Medial compartment — inner side . � Lateral compartment — outer side .
Certain other factors need to be considered , and your surgeon will discuss these with you .
Femoral component
Patellar component
Femoral component
Tibial component
Tibial component
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