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Arthroplasty Fixation
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Cement
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Porous coating
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Press-fit
Cement
- Especially useful in patients with osteoporosis
- Cemented acetabular components have progressively increased rate of loosening
over time, thus hybrid total hip replacement (cementless acetabular component
with cemented femoral component) are frequently performed
Porous coating
- Surface coating of metal, ceramic, or polymers, or combination.
- Formed into beads, irregular particles, or etchings
- Allows for bone ingrowth
 
Porous coated acetabular cup and proximal femoral components,
polyethylene cup liner
Press fit
- Acetabulum and femur prepared for maximum, optimal fit
- Technically demanding surgery
- Acetabular component frequently secured with screws
- Femoral component may fit tightly, but may not fill canal in all planes
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