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Pars Defect
Pars defect, also known as spondylolysis, is a condition in which there is a stress fracture or weakness in the pars interarticularis, a small bony segment that connects the upper and lower parts of a vertebra in the spine. This defect most commonly occurs in the lumbar (lower back) region, particularly in the L5 vertebra, and is often caused by repetitive stress or overextension of the spine, which is common in athletes, especially those involved in sports like gymnastics, football, or weightlifting.
If left untreated, a pars defect can lead to spondylolisthesis, where the vertebra slips forward over the one below it, potentially causing nerve compression and more severe symptoms. Pars defect can cause significant discomfort and limit activity, especially in active individuals.
Common Symptoms
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Lower back pain that worsens with activity, especially activities that involve bending backward, twisting, or heavy lifting
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Pain that improves with rest or lying down
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Stiffness and tightness in the lower back
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Pain radiating to the buttocks or thighs (in some cases)
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Increased pain with hyperextension of the spine (arching the back)
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Tenderness over the affected vertebra in the lumbar region
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Muscle spasms in the lower back
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Reduced range of motion in the spine
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Difficulty performing activities that involve repetitive spinal movements
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Weakness, numbness, or tingling in the legs if nerve compression occurs due to vertebral slippage (in cases of spondylolisthesis)
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