Nerve root block
A nerve root block is a steroid or anaesthetic injection to treat back pain caused by a trapped or inflamed nerve in the spinal column. The injection is given directly into the area of your back which is causing you pain.
A nerve root block injection may improve your pain, but it isn’t a cure for your condition. The injection will reduce pain for most people for a period of time and will completely and permanently eliminate pain for others.
Facet joint injections
Anaesthetic or steroid injections into the facet joints can help if they’re affected by arthritis. The injection is a mixture of local anaesthetic (which numbs the nerves for a few hours, so you won’t feel anything) and steroid (which gives reduces inflammation in the joint and nerves). Facet joint injections may be carried out on several joints during the same operation.
The procedure isn’t always an effective cure for back pain, but it can relieve your symptoms. If successful, it can be repeated at four-monthly intervals.
Medial branch block for back pain
Medial branch block can also be a good temporary solution to reduce back pain caused by conditions such as osteoarthritis. It’s usually recommended after other physiotherapy options have been tried.
The medial branch block works by injecting a local anaesthetic directly to the nerves in your facet joint. This blocks the pain signals travelling through the nerve.