There are more reasons for foot and calf soreness, which may be related to excessive exercise, knee osteoarthritis, lumbar disc herniation and so on. 1. Excessive exercise: it may be considered that the recent long standing, or walking, lactic acid accumulation is not metabolized in a timely manner, appearing foot, calf soreness. 2. Knee arthritis: osteoarthritis of the knee joint and calf muscle strain, some patients may also have knee meniscus cartilage damage, causing calf and foot soreness. 3. Lumbar intervertebral disc herniation: prolonged weight bearing or excessive force on the lumbar spine leads to irritation and compression of the nerve roots of the sciatic nerve in the lower limbs, resulting in radiating pain in the lower limbs, as well as soreness, numbness and other symptoms. When foot and calf aches and pains occur, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, clarify the cause with the doctor’s help, and carry out targeted treatment or therapy.