Symptoms of pain in the lumbar and hip joints may be due to the following diseases: First, this is the posterior aspect of the pelvis and the location where the sacrum connects with the ilium is called the sacroiliac joint. Sacroiliac joint lesions will appear waist and hip joint pain, most of the sacroiliac joint lesions are inter-articular ligament damage and cause pain. Especially women who have just given birth to a child are particularly prone to sacroiliac joint injuries. Some elderly people may suffer from sprains or falls, which may also cause sacroiliac joint injuries, and the localized pain may be accompanied by radiating pain in the thighs or even the calves. There are also some tuberculosis infections of sacroiliac joints, which can also have this symptom, but it is relatively rare and easy to diagnose. Secondly, patients with lumbar disc herniation may also have lumbosacral pain because of the irritation of lumbar spinal nerves, but the lumbosacral area will not be painful because of pressure or percussion.