It is well known that cortisone is a powerful anti-inflammatory agent but it also has a mild softening effect which can be very useful when the condition has a narrowing or tightening component. A mixture of cortisone and a local anaesthetic, usually lignocaine.
Generally the response falls into three broad groups. In some people the response is very quick within a few days but in the majority of patients it may take 2-3 weeks for the injection to work. If it has not worked by 6 weeks then it is unlikely to work.