Diagnostic challenges in acromioclavicular septic arthritis

Area of Science:

• Infectious Diseases
• Rheumatology
• Genetics

Background:

• Klinefelter's syndrome is a genetic condition that can predispose individuals to certain health issues.
• Staphylococcal sepsis is a serious bloodstream infection requiring prompt medical attention.
• Acromioclavicular joint (ACJ) septic arthritis is an uncommon but potentially severe joint infection.

Observation:

• A 69-year-old male with Klinefelter's syndrome presented with shoulder pain and symptoms of staphylococcal sepsis.
• Magnetic Resonance Imaging (MRI) identified the infection localized to the acromioclavicular joint.
• The patient received intravenous and oral antibiotics for treatment.

Findings:

• The patient showed clinical improvement with antibiotic therapy.
• No recurrence of infection was noted at a 2-year follow-up.
• Successful management of ACJ septic arthritis was achieved.

Implications:

• This case highlights the importance of a high index of suspicion for ACJ septic arthritis, even in rare presentations.
• Diagnostic challenges include unfamiliarity with the condition, imaging interpretation, and obtaining sufficient synovial fluid.
• Early and accurate diagnosis and treatment are vital to prevent significant patient morbidity and mortality.