How often cortisone injections are given varies based on the reason for the injection. This is determined on a case-by-case basis by the health care practitioner. If a single cortisone injection is curative, then further injections are unnecessary. Sometimes, a series of injections might be necessary; for example, cortisone injections for a trigger finger may be given every three weeks, to a maximum of three times in one affected finger. In other instances, such as knee osteoarthritis, a second cortisone injection may be given approximately three months after the first injection, but the injections are not generally continued on a regular basis.
Most injections into the knee or a smaller joint, like that at the base of the thumb, are simple procedures that can be done in a doctor’s surgery. When performed by an experienced physician, the injection is only mildly uncomfortable.
First, the doctor cleans the skin in the area with an antiseptic. If the joint is puffy and filled with fluid, the doctor may insert a needle into the joint to withdraw the excess fluid and examine it. Removing the fluid rapidly relieves pain also because it reduces pressure in the joint and may speed-up healing. Next, the doctor uses a different needle to inject the corticosteroid into the joint.
Injecting a large joint, like the hip, is more complicated and may require imaging tests to help the doctor guide the needle into the joint. Experienced rheumatologists, orthopaedic surgeons, anaesthetists, and radiologists may inject the facet joints of the lower spine.
Cingal TM , Monovisc ® and Orthovisc ® may not be suitable for everyone. Talk to your doctor if you have questions regarding these products, or for more information on pain associated with osteoarthritis of the knee. Product information is only pertinent for use in Canada. Cingal TM , Monovisc ® and Orthovisc ® are trademarks of Anika Therapeutics Inc., used under licence by Pharmascience Inc. Pendopharm, Division of Pharmascience Inc. Product Licences are pertinent to use in Canada. Product Licences herein are not approved for use in the .