What does bilateral pars defect mean?

Bilateral pars defect refers to a condition where there are defects or fractures in the pars interarticularis, a small segment of bone in the lumbar spine, on both sides. This condition can lead to spondylolisthesis, where one vertebra slips forward over another, causing pain and instability in the lower back. It is often associated with repetitive stress or overuse, particularly in athletes. Diagnosis typically involves imaging studies, and treatment may include physical therapy, bracing, or, in severe cases, surgery.