This study investigates sex-related differences in periprosthetic Joint Infections (PJIs) after total joint arthroplasty. A systematic review of nine studies reveals a higher risk of infectious complications in males compared to females, as indicated by statistically significant findings in half of the studies. This underscores the need for ongoing sex-related analysis to enhance evidence and insights in the field of PJIs.

This work investigates periprosthetic joint infection (PJI) caused by rapidly growing mycobacteria (RGM) following total joint arthroplasty. Eight patients were identified as part of a retrospective review. The isolated RGM species included Mycobacterium abscessus  (three cases), M. fortuitum (three cases), and one case each of M. immunogenum and M. mageritense. We provide novel insights into the successful treatment of PJIs caused by newly identified RGM (M. immunogenum and M. mageritense).

Culture-negative (CN) prosthetic joint infections (PJIs) present significant challenges for clinicians. While previous retrospective analyses have been conducted, inconsistencies in inclusion criteria and treatment success measures limit the opportunity for direct comparisons and use in guiding clinical practice. We compared baseline characteristics and outcomes of CN with culture-positive (CP) cases in a large multicentre prospective cohort and demonstrated improved overall outcomes in CN PJI.

Areas in orthopedics, such as spinal metastasis and sarcomas, have shown benefits of concentrated care in specialized centers. Currently in the US, no such centers exist for treatment of periprosthetic joint infection (PJI). We established a PJI center and review our first-year experience. Additionally, we note the complexity and volume of referrals, in addition to the abundant opportunities for research that referral centers provide. PJI centers are feasible and can improve PJI care.