https://www.selleckchem.com/products/blu-554.html This savings increases to $411.6 million over a 10-year span and $1.18 billion over a 20-year span. Preoperative penicillin allergy testing or risk stratification via thorough history should be implemented as standard of care for patients with self-reported penicillin allergies before TJA and would result in decreased cost of PJI. Preoperative penicillin allergy testing or risk stratification via thorough history should be implemented as standard of care for patients with self-reported penicillin allergies before TJA and would result in decreased cost of PJI. In revision total hip arthroplasty (THA) cases with preserved femoral metaphyseal bone, tapered proximally porous-coated "primary" femoral stems may be an option. The objective of this study was to compare outcomes of patients with Paprosky I or II femoral bone loss undergoing revision THA with either a primary metaphyseal-engaging cementless stem or a revision diaphyseal-engaging stem. This was a retrospective analysis of 70 patients with Paprosky I or II femoral bone loss who underwent femoral revision. 35 patients who were revised using a primary cementless femoral stem were compared with 35 patients who underwent femoral revision using a revision diaphyseal-engaging stem. The groups were similar regarding age, gender, body mass index, and American Society of Anesthesiologists. Clinical and radiographic outcomes and complications were compared over an average follow-up of 2.9 years (SD 1.4). Revision THA was most commonly performed for periprosthetic joint infection (N= 27, 38.6%). The groups were similar with regards to Paprosky femoral classification (P= .56), length of stay (P= .68), discharge disposition (P= .461), operative time (P= .20), and complications (P= .164). There were no significant differences between primary and revision femoral stem subsidence (0.12 vs. 0.75 mm, P= .18), leg length discrepancy (2.3 vs. 4.05 mm, P= .37), and Hip Disability an