This meta-analysis evaluates synovial fluid white blood cell count and polymorphonuclear neutrophil proportion in order to diagnose chronic peri-prosthetic joint infection. Based on 74 studies, it identifies optimal thresholds, with rule-in and rule-out thresholds enhancing diagnostic precision. Confounding factors such as fractures and inflammatory arthritis are addressed. The findings support standardized diagnostic frameworks in improving accuracy and clinical consistency.

We compared the outcomes of one-stage and two-stage revision surgeries for periprosthetic joint infections of the knee and hip joints. Patients in both groups had similar reinfection rates and functional recovery, but two-stage hip patients experienced more complications, partly due to the temporary use of cement spacers. Our findings suggest that one-stage revision may be a viable alternative to two-stage revision, potentially reducing complications without increasing reinfection risk.

We report the first case of axillary nerve neuropathy in an adult secondary to shoulder septic arthritis with abscess formation. Prompt surgical drainage, lavage, and targeted antibiotic therapy led to full recovery. This case also highlights the risks of intra-articular injections, particularly in immunocompromised patients, and underscores the importance of maintaining a high index of suspicion for septic arthritis in this population, even when the classic signs are absent.