Spondylolysis Flashcards
What specific parts of a vertebra are seperated as a result of a pars defect?
the vertebral body, pedicle, and articular process are seperated from the other articular process, lamina, and spinous process
What is the incidence of spondylolysis in the general population?
a range from 2.6 % to 10%
Lumbar spondylolysis has not been reported in what groups of individuals?
fetuses, newborns, rarely in children under five years old, patients who have never walked and in non-erect species
Lumbar spondylolysis only been reported in what types of species?
those species that walk erect; humans
What does lumbar spondylolysis appear to be related to?
the uniquely human upright stance or erect posture
What is the gender bias and locational bias associated with lumbar spondylolysis?
men at L5/S1; women at L4/L5
What is the age range typically associated with lumbar spondylolysis?
10-20 year olds
What motion(s) is particularly associated with lumbar spondylolysis?
hyperextension coupled with rotation
What fills the space in a lumbar spondylolysis?
fibrocartilagenous material
What types of neural function(s) have been associated with the spondylolysis ligament?
nociception, neuromodulation and autonomic function
What is the appearance of the lumbar vertebra upon oblique x-ray view?
a Scotty dog
What is the appearance of a pars defect in a lumbar vertebra upon oblique x-ray view?
a collared Scotty dog
What part of a lumbar vertebra forms the neck of a scotty dog?
the pars interarticularis below the superior articular process
In an oblique x-ray, spondylolysis below the superior articular process of a lumbar pars interarticularis is associated with what part of the scotty dog?
the neck of the scotty dog
What part of a lumbar vertebra forms the eye of a scotty dog?
the pedicle
