Abstract

Study DesignA prospective clinical study.PurposeThe objective of the present study was to evaluate the behavior of spinal deformities in tuberculosis (TB) of the spine during the initial 2 years and to suggest remedial measures.Overview of LiteratureSpinal TB is the most common cause of a kyphotic deformity in many parts of the world. Treatment of the established deformity is difficult, hazardous and has a high complication rate.MethodsWe followed 50 adult patients treated for spinal TB for a minimum of 2 years. Average values of vertebral body height loss (VBL), deformity angle, kyphosis angle, and lumbosacral joint angle at the final follow-up were compared with the values at initial presentation. The relationship between the amount of initial VBL and final kyphotic angle was analyzed.ResultsAverage values of VBL, deformity angle, kyphosis angle, and lumbosacral joint angle at initial presentation were 0.26, 12.51°, 2.26°, and 12.3°, respectively; and the corresponding values at the final follow-up were 0.7, 17.8°, 5.64°, and 10.8°, respectively. The increase was extremely significant for the deformity angle (initial vs. 6th month, p=0.000; 6th month vs. 24th month, p=0.000) and kyphotic angle (initial vs. 6th month, p=0.003; 6th month vs. 24th month, p=0.000) in the thoracic and thoracolumbar regions during the first 2 years of the disease process. The increase in the deformity angle in the lumbar region was significant only in the initial 6 months (p=0.01). We could not find any correlation between the initial VBL and the final kyphotic angle (r=0.302, p>0.05).ConclusionsDifferent regions of the vertebral column respond differently to bony destruction caused by spinal TB. Deformity progression is more significant during the initial 6 months of the disease process, and this may be the best time to take remedial measures to prevent development/progression of the deformity. Kyphotic deformity keeps increasing even after 6 months of antituberculous treatment, and it does not correlate with the initial VBL in adults.

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