Numbness from the back of the foot to the front of the calf may be caused by prolonged immobilization, lumbar disc herniation, etc. It needs to be treated according to the cause of the disease through massage, traction, use of drugs such as ibuprofen, and surgical treatment. 1. Prolonged immobilization: when a person is sedentary or maintains a posture for a long time, it may lead to numbness in the lower limbs. This may be caused by the compression of superficial nerves or blood vessels. This is a normal physiological reaction and can be relieved after activities without special treatment. 2. Lumbar disc herniation: Lumbar disc herniation may compress the nerve roots, resulting in numbness and other abnormal sensations in the lower limbs. Mild cases can be treated with conservative treatments such as massage, traction, ibuprofen for pain relief and mannitol for dehydration. Severe cases may require surgical treatment. In addition to the above reasons, the back of the foot to the front of the calf numbness may also be caused by other, need to address the cause of the treatment, so the emergence of this symptom, it is recommended to go to the regular hospital in a timely manner to consult, identify the causes, and active treatment.