Numbness of the left foot surface is mainly caused by nerve injury of the lower limb such as peroneal nerve injury, lumbar spine disease such as lumbar spondylolisthesis compressing the corresponding nerve root, vascular disease of the left lower limb such as arterial occlusive disease, peripheral neuropathy such as diabetes mellitus and so on.
1. Common peroneal nerve injury, usually with long-term lower limb compression or trauma history, in the numbness at the same time, often toes and ankle joints can not dorsiflexion, through electromyography can be clear.
2. Lumbar spondylosis compresses the lumbar nerve root, such as lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis, etc., which is usually accompanied by pain and discomfort in the lower back. Lumbar spine CT or MRI examination can be clearly diagnosed.
3. Lower extremity vascular disease, such as lower extremity arterial occlusive disease, due to vascular occlusion caused by lower extremity sensory abnormalities such as numbness.
4. Diabetes mellitus and other causes, diabetes mellitus end stage caused by neuropathy caused by the left foot numbness, generally have a history of diabetes mellitus.
The cause of numbness of the left foot is more complex, there are physiological factors such as transient pressure caused by blood circulation disorders, generally soon symptoms can be relieved, if the symptoms recur or a short period of time does not relieve the need to go to the hospital in a timely manner to diagnosis and treatment, clear causes.