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.
Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee.
J B
JB
Stiehl
D000077:Acetabulum; D000818:Animals; D001696:Biomechanical Phenomena; D006622:Hip Prosthesis / Q000009:adverse effects / Q000379:methods; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013314:Stress, Mechanical