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VERTEBRAL OSTEOMYELITIS: DIAGNOSTIC AND THERAPEUTIC ALGORITHM



Abstract

Introduction: Purpose of this study is to evaluate retrospectively 61 cases of spinal infections, unrelated to previous spinal surgical treatment. We included patients with drug addiction. Objective of this study is to analyze the results of treatment using a diagnostic and therapeutic algorithm. This procedure may allow a systematic and comprehensive approach to the diagnosis and management of vertebral osteomyelitis. For instance, despite advances in imaging, this pathology is easily missed and treatment is often delayed.

Materials and Methods: We reviewed 61 patients aged 15–83 (average 52y) treated between January 1997 and March 2001. All patients received plain radiographs, gadolinium enhanced magnetic resonance imaging, Ga-67 and Tc-99 scintigraphy. A total of 36 patients underwent CT- guided fine-needle aspiration biopsy: the coltures of spinal specimen were positive in 47% (17/36) of cases. Blood coltures were positive in 65% (13/20).

Results: Staphylococcus Aureus was the main organism followed by Mycobacterium Tubercolosis and Staphylococcus Epidermidis. All patients received intravenous antibiotics. Neurologic impairment was present in 13 (26%) patients who underwent surgery. All patients with paresis recovered completely after surgical decompression (100%). Patients with nonsurgical spondylodiscitis were treated with bed rest and bracing. They reported residual back pain not frequently 22% (8/36) than patients treated surgically 38% (5/13).

Conclusions: the outcome of patients with vertebral osteomyelitis in general is favourable when appropriate treatment is picked even if vertebral osteomyelitis is a rare condition and because of this often overlooked initially. Delay in diagnosis may results in spine impairment, more hospitalisation time and more cost. We suggest diagnostic and therapeutic criteria in order to simplify the treatment.

The abstracts were prepared by editorial secretary, Mrs K. Papastefanou. Correspondence should be addressed to Professor K.N. Malizos, Department of Orthopaedic Surgery, School of Medicine, University of Thessalia, Larissa, 41222 GREECE