A herniated disc and spinal stenosis are two of the most common causes of pain radiating from the back down the leg.
Lower back pain is one of the most common health problems, but when that pain begins to spread to the buttocks, thigh, or even the foot, it usually indicates that one of the nerves exiting the lumbar spine is affected. Many people describe this as pain that "runs" down the leg or is accompanied by tingling, numbness, or weakness. In some cases, the discomfort appears when walking, sitting for long periods, or performing certain movements. Have you ever experienced lower back pain that radiates down your leg?
“When lower back pain begins to radiate down the leg, it’s important to identify what is causing the nerve compression or irritation. Treatment will always depend on the underlying cause of the symptoms.”"," he says Dr. Bernardo MosqueiraAlthough this problem is popularly associated with a herniated disc, there are different pathologies that can produce very similar symptoms.
Herniated disc, spinal stenosis, and other common causes
One of the most common causes of lower back pain that radiates down the leg is a lumbar herniated disc. When part of the intervertebral disc compresses a nerve root, the pain can spread along the path of the affected nerve and cause symptoms such as tingling, numbness, or muscle weakness.
However, it is not the only possible cause. Lumbar spinal stenosis can also cause radiating pain down the legs. In these cases, the progressive narrowing of the spinal canal reduces the space available for the nerves and generates symptoms that usually worsen when walking or standing for long periods. In addition, certain degenerative spinal conditions can cause nerve compression and manifest in a similar way.
For this reason, a correct diagnosis is essential. Although the symptoms may seem the same, the underlying cause can be different, and each patient requires an individualized assessment. You can find more information in our articles on Symptoms of lumbar and cervical disc herniation y spinal stenosis: diagnosis, treatment and when surgery is necessary.
The importance of an accurate diagnosis
One of the most common mistakes is assuming that any pain radiating down the leg necessarily indicates a herniated disc. In reality, different conditions can produce very similar symptoms. A clinical examination, the patient's medical history, and imaging tests allow doctors to accurately determine the source of the problem and establish the most appropriate treatment.
Dr. Mosqueira, a neurosurgeon specializing in the spine, with more than 25 years of experience, explains that "The important thing is not to label the problem, but to accurately identify what is causing the symptoms in order to offer the best solution in each case." In many patients, symptoms can be managed with conservative treatments. In other cases, especially when there is significant nerve compression or a substantial impairment of quality of life, intervention using microsurgical spinal techniques may be necessary.
You can find more information about this process in our article on diagnosis of spinal problems.
Lower back pain that radiates down the leg should not be considered a simple annoyance when it persists over time or begins to limit everyday activities such as walking, driving, or resting properly. Herniated discs and spinal stenosis are two of the most common causes of this problem.However, only a specialized assessment can determine the exact origin of the symptoms and establish the most appropriate treatment.
If pain is affecting your quality of life, a specialist consultation can help you understand what is happening and what options are available to regain mobility and well-being.
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Because there is often irritation or compression of one of the nerves that come out of the lumbar spine.
Yes. It is one of the most frequent causes of pain radiating from the back to the lower extremity.
Yes. Narrowing of the spinal canal can compress nerves and cause pain, tingling, or weakness in the legs.
When the pain persists for weeks, limits daily activity, or is accompanied by loss of strength or sensation.
No. Treatment depends on the cause, the intensity of the symptoms, and the evolution of each patient.
