IntroductionFungal vertebral osteomyelitis (FVO) is an uncommon but aggressive disease that may cause spinal instability, neurological insult, and possibly death. Little data about treatment strategies and patient outcomes exist. A retrospective review of medical and surgical management with follow-up of this disease was performed.
MethodsA retrospective review was conducted of patients with FVO treated with surgery and pharmacotherapy at a single institution over a 7-year period (1999 to 2006). Patients were included in analysis if they had biopsy and radiographically confirmed vertebral fungal infection. Analysis was constructed through office and medical records. Specific data points included age, gender, microbiology, treatment, clinical presentations and outcomes.
ResultsNine patients with FVO were identified (5 females and 4 males) ranging in age from 42 to 77 years (mean=57 years). Advanced age (n=4) and previous spine surgery (n=4) were the most commonly identified risk factors for FVO. Candida species (n=7), Aspergillus fumigatus (n=2), and Saccharomyces cerevisiae (n=1) pathogens were identified. The average pre-operative erythrocyte sedimentation rate (ESR) was 83.2 mm/hr (normal range is 0 to 20 mm/hr) and C-reactive protein (CRP) was 6.9 mg/dL (normal range is 0 to 1.2 mg/dL). Surgical debridement and stabilization procedures were performed in all 9 patients. The average antifungal prescription duration was 21 weeks. Revision surgical procedures (n=5) were the most commonly identified treatment complication, and the average duration between the initial surgery and the first subsequent procedure was 3.5 months (range, 3 weeks to 9 months). In comparison to pre-operative ASIA Impairment Scores, patient neurological status was improved (n=4) or stable (n=3) at latest follow-up. Average follow-up duration was 19 months. There was no mortality.
ConclusionsAggressive surgical treatment with concurrent pharmacotherapy can successfully treat FVO and prevent neurological injury. Repeat surgeries are common in patients with progressive vertebral degeneration or persistent infection.