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Updated: May 7, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
Published on: February 9, 2011
Clinical characteristics and surgical outcomes of spinal infection caused by methicillin-resistant staphylococcus
Mitsuhiro Nishizawa1, Mladen Djurasovic1, Steven D Glassman1
1Norton Leatherman Spine Center, 210 East Gray Street, Suite 900, Louisville, KY 40202, USA; University of Louisville, Department of Orthopaedic Surgery, 550 S. Jackson Street, 1st Floor ACB, Louisville, KY 40202, USA.
Background Context:
Methicillin-resistant Staphylococcus aureus (MRSA) is one of the major causative organisms of spinal infections, and its incidence of spinal infection caused by MRSA has been increasing in recent years. However, limited studies have assessed surgical outcomes and complications focusing specifically on MRSA spinal infections.
Purpose:
To evaluate the characteristics, surgical outcomes, and complications of spinal infection caused by MRSA.
Study Design:
Retrospective observational cohort.
Patient Sample:
Patients who underwent surgery for spinal infection, including discitis, osteomyelitis, epidural abscess, and/or septic facet arthritis. Patients with a history of spine surgery within the preceding 90 days or culture-negative spondylodiscitis were excluded.
Outcome Measures:
Recurrence and postoperative complications within 1 year.
Methods:
We retrospectively reviewed 205 patients who underwent surgery for spinal infection. Clinical characteristics and postoperative complications within 1 year were compared between patients with spinal infection caused by MRSA (MRSA) and those with infections caused by other organisms (Non-MRSA). Multiple logistic analysis was performed to determine independent factors associated with recurrence.
Results:
MRSA was identified in 89 patients (43%). Compared to Non-MRSA patients, MRSA patients had a significantly higher incidence of current smoking (57% vs 40%, p=.021), intravenous drug use (49% vs 33%, p=.021), thoracic spine involvement (43% vs 28%, p=.039), epidural abscess (65% vs 45%, p=.005), concomitant bone and joint infections (30% vs 16%, p=.027), and positive blood culture (63% vs 46%, p=.017). They also had significantly higher rates of readmission after 30 days postoperatively (48% vs 34%, p=.044) and recurrence (20% vs 7.8%, p=.012). MRSA was an independent risk factor for recurrence following surgical treatment of spinal infection (MRSA: OR 2.60, 95% CI 1.10-6.52, p=.033).
Conclusion:
Spinal infections caused by MRSA were associated with a higher prevalence of current smoking, intravenous drug use, thoracic spine involvement, epidural abscesses, concomitant bone or joint infections, and bacteremia. Moreover, MRSA was identified as an independent risk factor for recurrence following surgical treatment of spinal infection.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) spinal infections show higher recurrence rates and complications. MRSA is an independent risk factor for recurrence after surgery for spinal infections.
Area of Science:
- Orthopedics
- Infectious Diseases
- Neurosurgery
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) is a growing cause of spinal infections.
- Limited research exists on surgical outcomes and complications specific to MRSA spinal infections.
Purpose of the Study:
- To evaluate the characteristics, surgical outcomes, and complications of spinal infections caused by MRSA.
- Compare outcomes between MRSA and non-MRSA spinal infections.
Main Methods:
- Retrospective observational cohort study.
- Reviewed 205 patients undergoing surgery for spinal infections.
- Compared clinical characteristics and postoperative complications between MRSA and non-MRSA groups.
Main Results:
- MRSA infections were associated with higher rates of smoking, IV drug use, thoracic spine involvement, epidural abscesses, and bacteremia.
- MRSA patients had significantly higher readmission (48% vs 34%) and recurrence rates (20% vs 7.8%).
- MRSA independently increased the risk of recurrence (OR 2.60).
Conclusions:
- MRSA spinal infections present with distinct risk factors and higher complication rates.
- MRSA is an independent predictor of recurrence after surgical treatment for spinal infections.
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