In the clinical years, often encountered some patients, such as finger stenosis tendovaginitis, radial stenosis tendovaginitis, tennis elbow, knee osteoarthritis, frozen shoulder, heel pain, pain is quite strong, long-term medication, do not do the treatment effect, suggested that he / they perform closure treatment, the answer is often: doctor, I heard that the closure is not good, after doing the closure, the bone will necrosis, can not work in the future. But these patients are often hearsay, they have not personally experienced, in fact, these patients, do not understand what is closed. Then what is closed? The so-called closed, the English is blocking, translated into Chinese is blocking, is actually a kind of injection therapy. We generally mention the closure, mainly refers to the use of a small amount of hormones (currently the most used in our country Depo Pine, Triamcinolone, Coninectone, prednisone, etc.), combined with a small amount of anesthetics, injected into the place of pain, the role of hormonal drugs mainly play the role of anti-inflammatory, where the inflammation, refers to sterile inflammation, and not the inflammation of bacterial infection we usually refer to. As long as there is pain, generally accompanied by inflammation, and the best anti-inflammatory drugs, is the hormone, and we usually do closed hormone used are very small, the impact on the whole body, very weak. Also closed with the anesthetic, the most clinically used is lidocaine, basically no side effects. Generally speaking, you do not perform closure treatment more than 4 times a year, there are no side effects. Of course, if you often perform closed treatment, over time, there will be side effects, such as femoral head necrosis, muscle atrophy, fragile tendons and other complications, but the probability of such complications is very low, do not worry too much. Other patients will often say: “doctor, I heard that the closure is very painful, I do not want to do”. In fact, the closure and our usual injection pain level, but because of the closure of some parts of the hand or foot and other places, pain will be sensitive, so the needle will be a little pain, but this pain time is very short, mainly into the needle of a moment, into the needle because of the closure of the drugs used in more than anesthetics, so the pushing of drugs basically no pain, so there is no need to worry too much about playing the problem of closed pain. So in the experienced and responsible doctor recommended that you line closed treatment, and do not worry, occasionally one or two closed, it plays a very large role, can play an immediate effect, than you often take drugs, physical therapy to work much faster, more convenient.