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Updated: Mar 1, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
Published on: February 9, 2011
Methicillin Resistant Staphylococcus Aureus Sacroiliac Joint Septic Arthritis in an Adult Patient Treated with
1Department of Orthopaedics and Traumatology, Royal Blackburn Hospital, Haslingden Road, Blackburn BB2 3HH.
Abstract:
Sacroiliac joint septic arthritis is a rare disease entity representing 1-2% of all cases of septic arthritis. Establishment of the diagnosis is often challenging given the non-specific presenting features and the potential cross-over with other pathologies. We report the case of a 50 year old gentleman who suffers with psoriasis and presented with sacroiliac joint septic arthritis complicated by Methicillin Resistant Staphylococcus Aureus (MRSA) bacteraemia and an iliopsoas abscess. This was successfully treated conservatively with a course of the novel antibiotic Daptomycin.
Insights
This case study highlights a rare instance of sacroiliac joint septic arthritis in a patient with psoriasis. The infection, caused by Methicillin-Resistant Staphylococcus Aureus (MRSA), was successfully managed with the antibiotic Daptomycin.
Area of Science:
- Infectious Diseases
- Rheumatology
- Orthopedic Surgery
Background:
- Sacroiliac joint septic arthritis is a rare condition, accounting for 1-2% of all septic arthritis cases.
- Diagnosis can be challenging due to non-specific symptoms and overlap with other conditions.
- Psoriasis is an autoimmune disease that can be associated with various musculoskeletal complications.
Purpose of the Study:
- To report a case of sacroiliac joint septic arthritis.
- To describe a complicated case involving Methicillin-Resistant Staphylococcus Aureus (MRSA) bacteremia and an iliopsoas abscess.
- To highlight the successful conservative management with a novel antibiotic.
Main Methods:
- Case report of a 50-year-old male patient.
- Clinical presentation, diagnostic workup, and treatment course were documented.
- Infection was confirmed and treated with Daptomycin.
Main Results:
- The patient presented with symptoms suggestive of sacroiliac joint infection.
- Diagnosed with sacroiliac joint septic arthritis, MRSA bacteremia, and an iliopsoas abscess.
- Successful conservative treatment was achieved with Daptomycin.
Conclusions:
- Sacroiliac joint septic arthritis, though rare, requires prompt diagnosis and management.
- MRSA can be a causative agent, leading to severe complications like bacteremia and abscess formation.
- Daptomycin is an effective therapeutic option for managing complicated cases of resistant bacterial arthritis.

