Close
  Indian J Med Microbiol
 

Figure 1: X-ray lumbosacral spine showing ossification within the facet joint capsules and ligamentum flavum bilaterally produce two vertical linear densities (upper black arrows) at the lateral aspects of the vertebral bodies. There is co-existent ossification within the interspinous-supraspinous ligaments, creating the midline linear opacity (starred) known as dagger sign. Marginal syndesmophyte formation (lower black arrows) is also seen. Furthermore, noted is the complete obliteration of bilateral sacroiliac joint spaces (white arrows) suggestive of bony ankylosis

Figure 1: X-ray lumbosacral spine showing ossification within the facet joint capsules and ligamentum flavum bilaterally produce two vertical linear densities (upper black arrows) at the lateral aspects of the vertebral bodies. There is co-existent ossification within the interspinous-supraspinous ligaments, creating the midline linear opacity (starred) known as dagger sign. Marginal syndesmophyte formation (lower black arrows) is also seen. Furthermore, noted is the complete obliteration of bilateral sacroiliac joint spaces (white arrows) suggestive of bony ankylosis