BACKGROUND Streptobacillus moniliformis is a zoonotic agent associated with rodent contacts. Although it is more commonly reported to cause rat-bite fever with reactive arthritides, it can also lead to pyogenic infection of the joints. CASE PRESENTATION We present a lady with past history of osteoarthritis developing streptobacillary septic arthritides of the right knee and left wrist, and re...

INTRODUCTION We present a case of Streptococcus pneumoniae polyarticular septic arthritis in a patient with rheumatoid arthritis receiving a single infusion of infliximab. CASE PRESENTATION A 38-year-old Japanese man with a 5-year history of seronegative rheumatoid arthritis had previously received sulphasalazine and methotrexate therapies and was on regular low-dose prednisolone therapy. Des...

To cite: Ellanti P, Moriarity A, Barry S, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/ bcr-2015-212079 DESCRIPTION A 63-year-old patient presented with a history of left low back and groin area pain. An MRI of the spine to rule it out as a cause identified a left iliopsoas abscess. The abscess was drained under CT guidance, which grew Escherichia coli and a...

Septic arthritis and osteomyelitis due to Serratia marcescens in immunocompetent patients without risk factors are extremely rare. Here, we report a case of septic arthritis and severe adjacent osteomyelitis of the tibia due to Serratia marcescens in a diabetic community-dweller patient. The patient had no contact with healthcare workers or facilities and had no chronic disease except for poorl...

A patient with well-controlled HIV-1 infection presented with fever and rigors, a widespread maculopapular rash, and severe generalised arthralgia. Sepsis of unknown aetiology was diagnosed, and treatment with broad-spectrum antimicrobials commenced. Following initial clinical improvement, a right knee septic arthritis developed. Microscopy and culture of the joint aspirate were negative for or...

Invasive disease caused by Haemophilus influenzae serotype A (Hia) is rare in children. Clinical syndromes caused by Hia include meningitis, sepsis and respiratory tract infections. Septic arthritis is rare in children with invasive Hia infection and hemarthrosis has not been described in the published literature. We report a case of septic arthritis and hemarthrosis caused by Hia infection in ...

The diagnostic approach to a case of septic monoarthritis involves the basic principle of identifying the organism. Simple as this sounds, it is amazing how many cases become 'difficult cases' when no organism can been isolated. Penetrating trauma by a thorn resulting in reactive arthritis can mimic septic arthritis very closely. Highlighting this rare etiology and the approach to a case of mon...

Haemodialysis patients have acquired immunity disturbances, co-morbidities and a vascular access, factors predisposing them to infection and bacteraemia. Clostridium perfringens is an anaerobic bacterium potentially causing severe infections, including rarely septic arthritis. We report the first case of Clostridium perfringens septic arthritis in a haemodialysis patient and suggest a haematoge...

The concentration of lactic acid in synovial fluid was estimated in 43 specimens from patients with an acute monoarthritis by a simple enzyme method. In 9 patients with 10 episodes of septic arthritis concentrations of synovial fluid lactic acid were significantly higher (mean 10.8 mmol/l) than in 33 patients with nonseptic effusions (mean 3.1 mmol/l). With this method concentrations of synovia...

We report a case of persistent Candida orthopsilosis associated septic arthritis. Repeated isolation of C. orthopsilosis from tissue and joint fluid was confirmed by identification of the ITS region of the rRNA gene using a Candida-Specific Luminex based assay and gene sequencing of the D1/D2 regions. This was the first case of C. orthopsilosis associated septic arthritis reported in Jamaica an...