Steroidal injections into joints (ie. hip, shoulder, wrist) are intra-articular injections.
If you have a swollen or painful joint, symptoms can be relieved by injecting a steroid medication into the joint. Sometimes a local anesthetic (numbing medicine) in injected along with the steroid.
It varies between people; improvement usually starts within 1 to 2 days. If helpful, the injection usually lasts from a few weeks to several months.
This procedure can help anyone with moderate to sever joint pain.