Two legs are not the same thickness: 1. Clinically, it can be seen in the thrombosis of the veins of the lower limbs, which can appear as swelling and pain in the affected lower limbs, and the thickness of the two legs will be different. 2. Clinically, it can also be seen in disuse atrophy, such as cerebrovascular disease left on one side of the limb is not flexible, the affected side of the leg appears disuse muscle atrophy, which is manifested as the thickness of the two legs is different. 3. The atrophy of the leg on the compressed side can occur in patients with special occupations, such as standing in one position for a long time, such as chefs. 4, clinically myositis, such as peripheral neuropathy or spinal cord compression, muscle atrophy can occur, and electromyography can be checked when necessary.