Flashcards in Spondylolisthesis Deck (20)
What vertebral condition results in spondylolisthesis?
What is the direction of spondylolisthesis?
anterior or forward displacement
What is the posterior direction of vertebral slippage called?
retrospondylolisthesis or retrolisthesis
What are the types/classifications of spondylolisthesis?
- type I spondylolisthesis (dysplastic spondylolisthesis, congenital spondylolisthesis)
- type II spondylolisthesis (isthmic spondylolisthesis)
- type III spondylolisthesis (degenerative spondylolisthesis)
- type IV spondylolisthesis (traumatic spondylolisthesis)
- type V spondylolisthesis (pathologic spondylolisthesis)
What is the locational bias of type I spondylolisthesis?
L5 or upper sacral segments
What is the location of the defect associated with type I spondylolisthesis?
more frequently the vertebral arch
Is the pars interarticularis always affected in type I spondylolisthesis?
What additional conditions are linked to type I spondylolisthesis?
- spina bifida occulta
- nerve root compression of the S1 nerve
What are the subtypes of type II spondylolisthesis?
- lytic spondylolisthesis or stress fracture induced spondylolisthesis
- elongated but intact pars interarticularis spondylolisthesis
- acutely fractured pars interarticularis spondylolisthesis
Which subtype of type II spondylolisthesis is stressed in Spinal?
lytic spondylolisthesis or stress fracture induced spondylolisthesis
What is the cause most frequently given for type II spondylolisthesis?
microfractures as the result of repetitive stress during hyperflexion and rotation
What is the age group typically associated with type II spondylolisthesis?
teenagers or young adults
Will spondylolysis always result in type II spondylolisthesis?
no, particularly in cases of unilateral spondylolysis
What gender bias, locational bias, and spinal canal dimensions are associated with type II spondylolisthesis?
- common in men
- located at the L5/S1 level
- demonstrates an increase in sagittal diameter of the spinal canal
What conditions are often associated with type III spondylolisthesis?
- intervertebral disc degeneration
- ligament laxity
- articular facet remodeling
What gender bias, locational bias, and spinal canal dimensions are associated with type III spondylolisthesis?
- more common in women
- particularly at L4/L5
- demonstrates no change in sagittal diameter of the spinal canal
What causes type IV spondylolisthesis?
fracture of the neural arch components
Is there a gender, locational, or age bias associated with type IV spondylolisthesis?
What are the causes associated with type V spondylolisthesis?
bone diseases such as Paget disease or osteogenesis imperfecta