Spondylolysis is typically caused by repetitive stress on the lower spine, which can weaken the bones and lead to a defect or stress fracture in the pars interarticularis. This condition is most commonly seen in young athletes who participate in sports that involve a lot of repetitive stress on the lower spine, such as gymnastics, football, and weightlifting. Other factors that may increase the risk of spondylolysis include:

• Genetics, as certain inherited conditions may make an individual more susceptible to the condition
• Abnormalities in the spine, such as a congenital defect or developmental abnormality
• Overuse of the lower back muscles, such as in athletes who engage in a high volume of training without adequate rest and recovery

It is important to speak with a doctor if you are experiencing symptoms of spondylolysis, so that a proper diagnosis can be made and appropriate treatment can be provided.