There may be several reasons for hip to leg soreness: first, pear-shaped muscle syndrome, patients with pear-shaped muscle syndrome can experience pain in the hip, and if it is severe and compresses the sciatic nerve, symptoms of soreness from the hip to the calf can occur, and this should be diagnosed and treated with relevant physical examination as well as neuromyography of the lower limbs. Second, lumbar disc herniation, if the lumbar disc herniation compresses the nerve root, the symptoms of sciatica can appear, which can radiate from the buttock to the calf and foot along the back of the thigh, with symptoms of soreness and numbness, then CT and MRI of the lumbar spine should be performed for diagnosis and treatment. Third, lumbar spinal stenosis, lumbar spinal stenosis can also compress the nerve, resulting in pain from the hip to the leg. Fourth, nerve tumor, if the peripheral nerve, such as the sciatic nerve, has its own tumor, it can also appear from the hip to the leg radiating symptoms of pain and numbness.