Cemented Total Hip Arthroplasty With Boneloc Bone Cement

ABSTRACT: Boneloc cement (WK-345, Biomet Inc, Warsaw, Ind) attempted to improve  cement characteristics by reducing exotherm during polymerization, lowering residual  monomer and solubility, raising molecular weight, and lowering airborne monomer and  aromatic amines. To study the efficacy of this cement, a selected group of 20 patients were    prospectively enrolled and followed up after hip arthroplasty. All components were cemented. During the enrollment period, approximately 70 other hip arthroplasties were performed.  Clinical evaluation was based on the Harris hip score. Radiographic evaluation was based on  assessment of position of the components, subsidence, and/or presence of radiolucencies.  Patients had follow-up for an average of 42 months (11 to 58 months); 1 was lost to follow-up.  Of these, 7 (35%) had failure at last follow-up. Despite its initial promise, Boneloc cement had  an unacceptably high failure rate over a relatively short follow-up period and is not  recommended for use. Despite the longevity and odor toxicity problems with conventional bone cement, new cement technologies must be approached with caution.