What is bilateral pars defect of the spine?

Pars defect. Bilateral pars defect also commonly called spondylolysis is a stress fracture near the joint of the spine. This usually occurs in the lower lumbar spine and can be painful and cause instability. This defect often occurs during the teenage years but can persist into adulthood and become symptomatic later in life.

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What is bilateral pars defect of the spine?

Lumbar Pars Defect. The defect is a stress fracture of the posterior portion of the spine that connects the facet joints and lamina with the anterior vertebral body at the level of the pedicle. This process is also known as a spondylolysis. It occurs in 5% of the general population but can be as high as 15% in certain athletes like gymnasts and football lineman due to the lumbar hyperextension. Read more...