448 Stem Cell Transplant is Effective in Preventing Aseptic Loosening

449 Routine Type and Screens are Unnecessary in Primary Total Joint Arthroplasty: Results from a Practice Change

450 A Handheld Ultraviolet-C  Light-Emitting Diode Decreases Contamination Near the Operative Field

452 Voltage Controlled Electrical Stimulation Combined with Povidone-Iodine Treats the Implant Associated MRSA Bacterial Burden