The evolvement of cementless stems: Risks and rewards

Cementless fixation is the most common form of femoral fixation in North America for primary total hip arthroplasty (THA). While many contemporary designs are available, the goal of all cementless femoral stems is to achieve initial mechanical stability by interference press-fit, thereby obtaining long-term stability through osseointegration. In general, cementless femoral component designs vary based upon material composition, type and extent of biologic ingrowth surface, and geometry.