Common corticosteroid injections. An anatomical and evidence based review.

BACKGROUND

The injection of depot corticosteroid preparations into soft tissues and joints has been used for some time to alleviate pain in a variety of musculoskeletal conditions. However the evidence, supporting the efficacy for these procedures, until recently, has been poor.

OBJECTIVES

To review the recent literature on the efficacy and toxicity of commonly used corticosteroid injections in musculoskeletal medicine and to illustrate the key anatomy of the injection sites.

DISCUSSION

Injections of corticosteroid into the lateral epicondyle, subacromial bursa, carpal tunnel, knee and plantar fascia all result in short term (weeks to months) alleviation of pain and other symptoms in the studies reviewed. The natural history of these conditions, however, is that the majority of patients improve over longer periods (months to a year) whether or not an injection has been given.