Late Periprosthetic Joint Infection After a Total Hip Arthroplasty Caused by Peptoniphilus Species: A Case Report and Literature Review

In this report, we present the clinical course of a 65-year-old woman who underwent a two-stage revision total hip arthroplasty (THA) for a late periprosthetic joint infection (PJI) caused by <i>Peptoniphilus</i> species (<i>Peptoniphilus</i> sp.). Furthermore, we conducted a literature review to contribute to the growing body of evidence regarding PJI caused by <i>Peptoniphilus</i> sp. Recognizing <i>Peptoniphilus</i> sp. as a potential causative pathogen in late PJI is important. Treatment should involve a two-stage revision surgery, with clindamycin (CLDM) and cephalosporins recommended for postoperative antibiotic therapy.