Septic Arthritis Caused by Perirectal Abscess

Septic arthritis is a debilitating, inflammatory condition of joints that can cause patients to experience significant pain and discomfort. An estimated 0.006% of people annually develop the condition; the absence of prompt diagnosis and treatment can lead to long-term joint dysfunction. Septic arthritis is usually caused by hematologic seeding of the joint space by bacteria, however, those who receive intra-joint injections and IV access are also at high risk for developing the condition. In this article, we present the case of a 58-year-old male with no immediately identifiable risk factors for septic arthritis, who was found to have a septic joint as a result of an invading perirectal abscess that was discovered in an imaging study.