Spinal stenosis is generally more serious than lateral saphenous stenosis and should be treated promptly in a hospital. Lateral saphenous stenosis is caused by poor posture or sedentary behavior, resulting in nerve root compression at the lateral saphenous fossa, which can lead to lower back pain, leg numbness, and other uncomfortable symptoms. Spinal stenosis is often caused by congenital developmental abnormalities or trauma, resulting in narrowing of the lumen in the spinal canal, which irritates or compresses the nerves in the spinal canal, and can also lead to low back pain, numbness in the legs, and urinary and fecal incontinence. Spinal stenosis is usually more serious than lateral saphenous stenosis because the irritation or compression of the spinal cord segments causes more damage and impact on the body, and the condition is more severe. If you develop conditions such as lateral saphenous stenosis and spinal stenosis, you should go to the hospital promptly. In daily life, you should avoid sedentary behavior or poor posture, and regularly exercise your low back muscles.