Haemophilus Influenzae Type F as a rare cause of septic arthritis

IB is an 80-year-old man who presented to our emergency department with acute pain, swelling, and fluctuance of his right knee. Investigations revealed neutrophilia, and acute renal impairment. He was admitted under the orthopaedic team and underwent knee aspiration. Synovial fluid culture yielded Haemophilus Influenzae Type F, a rare cause of septic arthritis. He underwent arthroscopic knee washout and debridement three times during his admission and was commenced on intravenous antibiotics. This case report discusses his clinical course, and the management of Haemophilus influenzae septic arthritis.