271 Rates and Outcomes of Periprosthetic Joint Infection after Primary Total Joint Arthroplasty in People with Injection Drug Use

272 The Use of CPAP for Patients with OSA is Associated with Early Medical and Surgery-related Complications Following TKA: A National Database Study

273 Single Prophylactic Antibiotic Dose for Total Knee Arthroplasty Resulting in No Increased Risks in Prosthetic Joint Infection

274 Do Hypercoagulable Disease Patients Necessitate Tertiary Center Referrals for Total Joint Arthroplasty Care? A Matched Case-Control Series

275 Implant Survivorship among Patients with Sickle Cell Disease following Total Knee Arthroplasty