What causes fish vertebrae?
The fish‐vertebra sign is a smooth deformity of the vertebral bodies, with a characteristic biconcave body occurring as a result of squared‐off depression of the vertebral end‐plates and compression by adjacent intervertebral discs.
What is fish vertebrae?
Fish vertebra, also known as codfish vertebra, describes the biconcave appearance of vertebrae (especially lumbar vertebrae).
What causes Ivory vertebrae?
This typical finding on radiography is known as ivory vertebra sign, which is caused by an increase in opacity of a vertebral body, which retains its size and contours, with preserved adjacent intervertebral discs.
What causes butterfly vertebrae?
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 a biconcave deformity?
The vertebral body deformity may include: “wedge fractures” when the anterior height of the vertebral body is less than posterior, “biconcave or lens fractures” when the central height of the vertebral body is lower than the anterior and posterior, “crush fractures” when the entire vertebral body height is reduced …
Why do sickle cell patients have fish mouth vertebrae?
The consecutive vertebral central depression seen in sickle cell anemia vertebrae is known as “fish-mouth” (Figs. 1, 2) vertebrae due to the similarity of upper vertebral inferior endplate together with lower vertebra superior endplate and a fish with opened mouth [1] (Fig. 3).
Where is the vertebrae on a fish?
The vertebral column of fish is differentiated in two regions: the trunk vertebrae, which cover the portion of the body between the skull and the tail, and the caudal spine [50].
What does Ivory vertebra mean?
The finding of an ivory vertebra means that one or more vertebrae has been affected by a density increase without any changes in the opacity or size of the adjacent intervertebral discs.
What pathology can cause a vertebra to appear ivory white?
Ivory vertebrae is a radiographic sign associated with many conditions including lymphomas, breast cancer, prostate cancer, Paget’s disease, and osteomyelitis (Figure 8).
Can butterfly vertebrae cause pain?
Several sources cite the association between butterfly vertebrae and congenital diseases such as Alagille syndrome, Jarcho-Levin syndrome, Crouzon syndrome, and Pfeiffer’s syndrome. Reports have also associated butterfly vertebrae with low back pain.
Is scoliosis a birth defect?
Congenital scoliosis is a sideways curvature of the spine that is caused by a defect that was present at birth. It occurs in only 1 in 10,000 newborns and is much less common than the type of scoliosis that begins in adolescence.
Is a wedge fracture serious?
Wedge fractures are considered serious when the fracture affects adjacent vertebrae, anterior wedging is 50%, severe hyperkyphosis (bent forward) is present, or bone fragment(s) are suspect in the spinal canal. In the latter, symptoms and sign of myelopathy (spinal cord dysfunction) may be present.
What is a hemangioma of the vertebral body?
Hemangiomas of the vertebral bodies are common benign vascular tumors. Vertebral body hemangiomas are the most common tumor of the spinal axis and occur in approximately 10-20% of adults. 1 Most of the lesions occur in the thoracolumbar spine.
What are the signs and symptoms of hemangioma of the spine?
These lesions are generally asymptomatic and symptoms may occur when there is expansion, epidural extension, pathological fracture, or hematoma formation. Hemangioma is usually confined to vertebral body and presents with rarefaction of bone, vertical striation, or coarse honeycomb appearance.
What is the etymology of fish vertebrae?
History and etymology. The term fish vertebrae is attributed to by Fuller Albright (1900-1969), American endocrinologist. In 1941, he used the term to describe the likeness of the biconcave shape of human vertebrae to the biconcave shape of fish vertebrae; although the species was unspecified.
Which CT findings are characteristic of hemangioma of the cervical spine?
Hemangioma is usually confined to vertebral body and presents with rarefaction of bone, vertical striation, or coarse honeycomb appearance. CT shows polka dot and corduroyappearance [Figure 6].