What is a butterfly vertebra?

A butterfly vertebra (sagittal cleft vertebra or anterior rachischisis) is a sagittal defect in the vertebral body caused by failure of fusion of the 2 lateral chondrification centers during embryogenesis.

What is Syndesmophytes spine?

A syndesmophyte is a bony growth originating inside a ligament, commonly seen in the ligaments of the spine, specifically the ligaments in the intervertebral joints leading to fusion of vertebrae. Syndesmophytes are pathologically similar to osteophytes.

What causes bamboo spine in ankylosing spondylitis?

Bamboo spine is a complication of ankylosing spondylitis that’s caused by widespread fusing of the bones in the spine. Bamboo spine is less flexible, more fragile, and has a different shape than a healthy spine.

Does Butterfly have vertebral column?

The butterfly vertebra is easily identified on an antero-posterior radiograph as two hemivertebrae separated by an empty space, with compensatory midline elongation of the adjacent vertebrae. See ​ Figs. 3 and 4 for lateral lumbar and antero-posterior views of the butterfly vertebral defect described in this case.

Are butterflies vertebrae common?

Definition: “Butterfly vertebra” is an uncommon congenital anomaly of the spine. It results from the failure of fusion of the lateral halves of the vertebral body because of persistent notochondal tissue between them forming a cleft in the center.

What is the difference between syndesmophytes and osteophytes?

As nouns the difference between syndesmophyte and osteophyte is that syndesmophyte is a bony growth originating inside a ligament while osteophyte is any small, abnormal growth of bone, often near a joint.

What are marginal syndesmophytes?

A marginal syndesmophyte has its origin at the edge or margin of a vertebral body and extends to the margin of the adjacent vertebral body. They are invariably bilaterally symmetrical as viewed on an AP spine film. Ankylosing spondylitis classically has marginal, symmetrical syndesmophytes (Fig. 43.12).

Is Butterfly a vertebrate or invertebrate?

invertebrates
The animal kingdom can be split into two main groups: vertebrates and invertebrates. Vertebrates such as mammals, fish, birds, reptiles and amphibians all have a backbone, whereas invertebrates, such as butterflies, slugs, worms, and spiders, don’t. Approximately 96% of all known species of animals are invertebrates.

What is A syndesmophyte?

A syndesmophyte is a bony growth originating inside a ligament, commonly seen in the ligaments of the spine, specifically the ligaments in the intervertebral joints leading to fusion of vertebrae.

What is syndesmophyte in ankylosing spondylitis?

A syndesmophyte is a bony growth originating inside a ligament, commonly seen in the ligaments of the spine, specifically the ligaments in the intervertebral joints leading to fusion of vertebrae. Syndesmophytes are pathologically similar to osteophytes. Ankylosing spondylitis patients are particularly prone to developing…

What causes syndesmophyte ossification?

The ossification seen in syndesmophytes originates from the annulus fibrosis of the intervertebral disc and spinal ligaments (anterior longitudinal and posterior longitudinal ligament ossification shown in the illustration.They occur in inflammatory spondyloarthropathies such as ankylosing spondylitis.

What are marginal syndesmophytes and how are they seen?

They are seen in only a limited number of conditions including: They can be classified as marginal (along the margins of the vertebral bodies) or non-marginal (larger and bulky away from the vertebral bodies). Ankylosing spondylitis classically displays symmetrical marginal syndesmophytes.