Mr. Zhang is a mid-level leader of a company, usually socialize a lot, smoke and drink a lot. A year ago, he had pain in his waist and right lower extremity, he likes to read some health knowledge, he thought he had a herniated disc. Two months ago, the pain worsened, and his own treatment did not work, so he came to our office in January, and once the film was taken, the right femoral head was necrosis, so he had to perform artificial joint replacement treatment, and after the operation, the back and leg pain gradually improved. In fact, the symptoms of many clinical diseases are very similar. The same manifestation may be a different disease. If the treatment is not effective, you must see a doctor and have another examination, you may understand.