Osteoarticular manifestations of brucellosis.

Introduction: Osteoarticular manifestations of human brucellosis occur in 20-40% of patients while spondylodiscitis is the most severe form of the bone and joint structures involvements.

Aim: The aim of this paper is tho show clinical and radiological caracteristics of osteoarticular forms of brucellosis, with special reference to spondylodiscitis.

Material And Methods: The medical histories of 120 hospitalized patients at the Clinic for Infectious Diseases, Clinical Center of Sarajevo University, diagnosed with brucellosis, were analyzed.

Results: Osteoarticular manifestations had sixty-nine patients, representing 78.4% of all localized forms of the disease. Spondylodiscitis represents 40.6% of all osteoarticular manifestations of the disease. Nine patients (32.1%) had paravertebral and paraspinal abscess. Median diagnostic interval for spondylodiscitis (116 +/- 160 days) was almost twice prolonged compared to the arthritis and sacroilitis (p < 0.05). The most common radiological manifestations were erosions of the vertebral surface (67.8%). Computerized tomography confirmed inflammation in 85.2% of the patients, while magnetic resonance imaging (MRI) showed radiological alterations in all patients (100%).

Discussion And Conclusion: Osteoarticular manifestations are the most common localised forms of brucellosis. The frequency of spondylodiscitis is in relation to duration of the diagnostic time. MRI shows a high degree of sensitivity to inflammatory changes of spine and "Pedro Pons' sign" is patognomic radiological alteration.