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References

Hemiarthroplasty

• Unipolar hemiarthroplasty

  • no longer used in USA

  
  

  Unipolar hemiarthroplasty. 

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• Bipolar hemiarthroplasty

  • Native acetabulum with cartilage remains
  • Large metallic cup size of native femoral head contains polyethylene component with articular cavity where metallic femoral head is locked into place.
  • Allows for 2 articular sites
  • Large metallic cup with native acetabulum
  • Metallic femoral head and polyethylene component
  • Reduces stress to native acetabulum
  • Metallic cup may move with respect to acetabulum

Bipolar hemiarthroplasty placed in patient with Garden IV hip fracture