A defect or crack in the posterior portion of one of the vertebral bones. The broken part is called the pars interarticularis and is between the superior and inferior facet joints of the lamina. It is usually due to a developmental defect but may be the result of a trauma. It may cause instability or a slippage (a spondylolisthesis).
A congenital defect in which a small area of bone in the spine does not fuse completely. This causes weakness in the spine and makes it subject to more frequent and more serious injury. People with spondylolysis should probably not engage in heavy lifting or in contact sports.
Slipping forward of one vertebra over another with stress fracture through the pars interarticularis. Due to repetitive flexion and extension in the adolescent spine. Spondylolysis occurs more frequently in children who are athletic than in sedentary individuals. It is reported to occur in 11% of female gymnasts. Spondylolysis also occurs in a dysplastic form due to underlying congenital abnormalities of the lumbar spine such as partial sacralization of a lower lumbar vertebral body or to an elongated isthmus. A defect in the neural arch between the superior and inferior facets of vertebrae without separation at the defect and therefore no displacement of the vertebrae. Fractures and slippage can also be attributed to high impact accidents generally associated with the cervical spine.
Inadequacy or absence of ossification of the vertebral arch at the level of the pars interarticularis. It is a rupture due to bone fatigue, sometimes a malformation.
a type of broken bone in the spine
A crack in the neural arch of the vertebra that can predispose to a Spondylolisthesis. This can be congenital caused by over-use or found in people with a history of falls.
Defect in the pars interarticularis of the vertebra. May or may not proceed spondylothesis
Degeneration of the spine.
A fracture (crack) in the â€œpars interarticularisâ€ where the vertebral body and the posterior elements, protecting the nerves are joined, In about 5 percent of the adult population, there is a developmental crack in one of the vertebrae, usually at the point at which the lower (lumbar) part of the spine (L5) joins the tailbone (sacrum). See section on spondylolysis and spondylolisthesis
Condition in which parts of a vertebra failed to form correctly in the womb. Usually doesn't cause pain but can lead to spondylolithesis as it weakens the connections between vertebrae.
The breaking down (dissolving into another) of a vertebra; usually beginning with a stress fracture.
A dissolution of the body of a vertebra
Displacement of one vertebrae over another with fracture of a posterior portion of the vertebra. A defect in the neural arch between the superior and inferior facets of vertebrae without separation at the defect and therefore no displacement of the vertebrae. It may be unilateral or bilateral and is usually due to a developmental defect but may be secondary to a fracture.
Caused by a defect in the pars interarticularis, a narrow strip of bone lying between the lamina and the inferior articular process below, and the pedicle and the superior articular process above. May be congenital, of traumatic origin or of overuse, resulting in a stress fracture. In oblique x-ray views, which have the appearance of a "Scotty Dog" , a spondylolysis through the pars interarticularisshowing will show up a "collar" around the dog's neck. This may be incidentally found.
A disorder in which the lower part of the spine is weakened by an abnormally soft vertebra.
Dissolution of a vertebra; a condition marked by a defect in the vertebral arch, and refers to a cleft or separation of the pars interarticularis that divides the neural arch into two segments. The diagnosis is made by x-ray.
Is either a unilateral or bilateral stress fracture in the isthmus of the spinal process with no slippage of the vertebrae.
spondyl is the Greek word for "vertebra" and olisis comes from the Greek word for "loosen." Put the two words together and you are describing a condition in which a defective vertebra becomes loose, or wobbly, because it has cracked. Usually, the crack or fracture is so minor that it remains undetected unless an X-ray is taken for some other reason. (See spondylolisthesis.)
Cleft in the pars interarticularis that divides the neural arch into two segments: Anterosuperior Segment: Pedicle, Transverse Process and the Superior Facet. Posteroinferior Segment: Inferior Facet, Lamina and the Spinous Process.
A fracture or cleft in the vertebral body, often through the posterior vertebral arch, loosening its normally firm attachment to contiguous vertebrae.