The back of the right foot sometimes popping pain may be lumbar disc herniation, lumbar spinal stenosis, peripheral nerve entrapment, gout, etc., should be timely consultation to identify the cause of the disease. 1. Herniated lumbar intervertebral disc: when the lumbar intervertebral disc degeneration and protrusion compresses the nerve root that innervates the lower limbs, the back of the foot can have symptoms such as radiating pain and numbness. 2. Lumbar spinal stenosis: when the lumbar spinal stenosis, the protruding intervertebral discs and hyperplastic bone spurs can also compress the nerve roots, resulting in radiating pain on the back of the feet. 3. Peripheral nerve entrapment: For example, if the common peroneal nerve is compressed in its course, the dorsum of the foot in the innervated area will show symptoms of pain and numbness. 4. Gout: when gout can also appear back of the foot pain, often for the dorsum of the big toe root pain, this time can be accompanied by local redness and swelling, serious gout stone formation. There are other causes of pain in the back of the right foot, such as lower extremity vascular disease, etc., if the persistence of non-relief, it is recommended to consult a doctor in a timely manner, improve the relevant examination, by the doctor to clarify the cause of the disease, to give targeted treatment.