Spondylolysis Flashcards
What is the incidence of spondylolysis in the general public?
a range of 2.6% to 10%
What is the geographic or ethnic bias for a higher incidence of spondylolysis?
the native Alaskan (Inuit) population
What does lumbar spondylolysis appear to be related to?
the uniquely human upright stance or erect posture
Lumbar spondylolysis is associated with what characteristics?
familial association, spina bifida occulta, racial/ethnic disparities, gender and locational bias, youthful incidence and activities requiring repetitive stress on the spine
What is the age range typically associated with lumbar spondylolysis?
10-20 year olds
What activities are particularly stressful at the pars interarticularis of lumbar spondylolysis?
gymnastics, dance, soccer
What fills the space in a lumbar spondylolysis?
fibrocartilagenous material
What is the appearance of the lumbar vertebra upon oblique x-ray view?
a Scotty dog
What is the appearance of a spondylolysis in a lumbar vertebra upon oblique x-ray view?
a collared Scotty dog
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
What part of a lumbar vertebra forms the ear of a Scotty fog?
the superior articular process
What part of a lumbar vertebra forms the nose of a Scotty dog?
the transverse process
What characteristics are associated with cervical spondylolysis?
rare, congenital, gender biased toward men, most common at C6 and linked to spondylolisthesis and spina bifida
What characteristics are associated with sacral spondylolysis?
rare in general population, within typical percents in the native Alaskan (Inuit) population, seems to be acquired, gender biased toward men, most common at S1 and linked to activities such as kayaking and harpooning
