Optimum acetabular component fixation.
Acetabular pressfit fixation depends on rigid initial fixation, subchondral bone preservation, and close apposition to allow biologic interface incorporation.  A hemispherical cup with a 1 to 2 mm pressfit offers optimal fixation and adjunct fixation with screws or pegs appears to be limited.  Pressfit continues to be the ideal fixation choice for most patients.
Stiehl
J B
JB
Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee.
D000077:Acetabulum; D000818:Animals; D001696:Biomechanical Phenomena; D006622:Hip Prosthesis / Q000009:adverse effects / Q000379:methods; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013314:Stress, Mechanical