Adolescents and young adults aged 10 to 30 experiencing recurring lower back pain should consider the possibility of spondylolysis, medical experts say. While back pain is commonly associated with degenerative conditions in people over 40, the condition can also occur in younger patients.
Spondylolysis refers to a defect in the pars interarticularis of the vertebral facet joint, resulting in bone separation. The primary causes include congenital weakness in the pars interarticularis or stress fractures from repetitive lower back use. The condition is most commonly found at the L4-L5 or L5-S1 vertebral levels. Many cases are diagnosed in adolescents presenting with back pain without any specific trauma history.
The hallmark symptom is lower back pain. In early stages, pain occurs when lifting heavy objects or overusing the lower back. As the condition progresses, even light movements can trigger pain. Pain typically intensifies immediately after waking, when standing up from a seated position, or when beginning to walk. Left untreated, spinal instability can worsen and progress to spondylolisthesis, where the upper vertebra slips forward and compresses nerves, causing radiating pain and numbness in the buttocks and legs.
Imaging studies are essential for accurate diagnosis. X-ray oblique views confirm pars defects, while CT scans provide detailed assessment of fracture sites. MRI evaluates nerve compression. For middle-aged and older patients, dynamic view imaging may be added to check for accompanying spondylolisthesis.
Treatment follows a stepwise approach based on symptom severity. Conservative treatment is the first-line option, including avoiding movements that strain the lower back, stretching, physical therapy, and pain medication for severe cases. When medication alone proves insufficient, non-surgical procedures such as nerve blocks or neuroplasty may be considered. Ligament-strengthening injections to reinforce tissues around the facet joints can also help address spinal instability.
Surgical treatment is considered when pain persists for several months despite non-surgical approaches and significantly impairs daily activities. Spinal fusion and fixation surgery addresses the root cause of pain by limiting abnormal movement and decompressing nerves. The decision is made carefully after comprehensive evaluation of patient age, degree of slippage, and nerve compression status.
"Many young people dismiss their back pain as simple muscle soreness and leave it untreated," said Lee Sang-hoon, professor of neurosurgery at National Health Insurance Service Ilsan Hospital. "If you experience recurring pain, it is important to get an accurate diagnosis early to assess your spinal condition."
He added: "Spinal conditions require ongoing management, so patients should approach them from a perspective of 'management' rather than 'cure.'"