Patient: examination and laboratory tests: osteochondral necrosis treatment: no many injections now are not good no good way has been eating painkillers history: winter is particularly serious have been to many hospitals also had some injections only at first good for a period of time now are not good because the patient’s home is far away want to ask if I bring the patient’s film to the doctor to see whether I can tell whether treatment is bilateral or unilateral? Is it treated systematically with medication to slow down the degeneration of articular cartilage? There are two types of injections in the joint cavity, one is an anti-inflammatory and analgesic solution for acute inflammation, and the other is a nutritional lubricant for the joint, which generally requires specific treatment to distinguish the condition.