A lumbar epidural injection won’t stop all low back and leg pain.
But it can reduce pain and break the pain cycle. This cycle may begin when pain makes it hard to move. Lack of movement can then slow down the healing. By getting you moving again, the injection can help speed your recovery. Not everyone responds in the same way, though. Some people feel more relief from the injection than others. Also, more than one injection may be needed to get relief.
An injection (called a selective nerve block or a selective epidural) can help locate the source of the pain. It numbs the roots of specific nerves. The effect lasts only briefly. If you feel relief, it may identify the pain source. If you feel no relief, the pain’s source may be at another place in your spine. Or, something other than inflammation may be causing pain.