15 Common Causes And Risk Factors For Septic Arthritis

9. Age-Related Vulnerability

Both the very young and the elderly are disproportionately affected by septic arthritis. Infants may contract it due to underdeveloped immune systems, often following infections like umbilical stump infections or respiratory illnesses. In older adults, declining immunity, reduced circulation, and existing joint degeneration make infections more likely and more damaging. Moreover, symptoms in seniors—such as fatigue or confusion—may be misattributed to other conditions, delaying diagnosis. This age-based vulnerability underscores the need for close observation and swift medical evaluation when new joint pain or swelling appears in these populations.

10. Hemodialysis Treatment

Patients undergoing hemodialysis are at increased risk due to repeated vascular access and a compromised immune state. Each dialysis session introduces the potential for bacteria to enter the bloodstream, especially if proper hygiene isn't maintained. Furthermore, individuals with end-stage kidney disease often experience chronic inflammation and are more susceptible to systemic infections. Once bacteria reach the bloodstream, they can easily localize in the joints. For dialysis patients, vigilant infection control—both during treatment and at home—is essential to reduce the risk of life-threatening complications like septic arthritis.