Treatment information
Understanding your pathway
What is the treatment?
A joint injection places medication into or around a joint, while a nerve block targets a selected nerve. They can have diagnostic or symptom-management purposes. The two labels cover many different procedures, so the body region, medication and clinical question should be clear before a treatment decision is made. [1][2][3]
Who may be considered?
A block may be considered when assessment identifies a plausible target and the response could inform care or support function. Pain in the same area can arise from different causes. For example, a sciatic nerve block in the leg is not equivalent to a nerve-root injection near the spine. [1][2][3]
Assessment, preparation and consent
Before deciding, discuss your diagnosis, previous treatment, medicines and relevant health conditions. Tell the clinician about allergies, infection, blood-thinning medicines, diabetes and possible pregnancy. Do not stop prescribed medicines yourself. Ask what alternatives are available, including not having a procedure, and allow time to consider the benefits, uncertainty and risks that matter to you. [4]
What happens during treatment?
The clinician explains the target and may use ultrasound or X-ray guidance to assist needle placement. Local anaesthetic and sometimes corticosteroid are used according to the purpose. The plan should specify whether the response is being measured as a diagnostic test or as a potential window for rehabilitation. [1][2][3]
Risks and safety considerations
Potential risks include bleeding, infection, allergic reaction and temporary or persistent nerve symptoms. Some blocks cause temporary weakness and increase fall risk. Steroid has additional effects such as altered blood glucose or local skin changes. The location determines other risks, so consent must be specific to the proposed block. [1][2][3]
Recovery and when to seek help
Follow the written instructions for transport, supervision, medicines, activity and driving. Recovery depends on the treatment and your health, so a fixed return-to-work date cannot be promised. Ask who to contact outside clinic hours. Seek urgent assessment for fever with worsening pain, new weakness or other unexpected neurological symptoms. Call 000 for breathing difficulty, collapse or another medical emergency. [2][4]
Expected benefit and limitations
Relief may be absent or temporary. A block response can contribute information but does not prove a diagnosis or guarantee the success of later treatment. Repeated injections need justification from benefit and risk, rather than being an automatic course. Rehabilitation, medication review or no further procedure may be the appropriate next step. [1][2][3]
Follow-up and rehabilitation
Before treatment, choose a practical goal such as walking, sleep or a daily task. Record changes in that activity, pain and any adverse effects, then discuss them at follow-up. Ask what degree of change would justify further treatment and what would lead to stopping or changing the plan. Rehabilitation and self-management may remain part of care even if symptoms improve. [4][5]
Questions to bring to your appointment
Ask which structure is being targeted, why this approach is being considered and how strong the evidence is for your diagnosis. Clarify costs, the planned review date and any practical help you may need at home. Bring previous reports and your medicine list so the discussion can address your circumstances rather than a generic treatment pathway.
Sources and further reading
Sources support the statements cited above. Overseas guidance may describe different services or eligibility rules. A procedure leaflet explains a technique and its risks; it does not establish that the treatment is effective for every condition.
- Local steroid injections to joints and soft tissues — The Dudley Group NHS Foundation Trust
- Dorsal root ganglion / nerve root block / transforaminal injection — Hull University Teaching Hospitals NHS Trust
- Nerve blocks for leg, foot or ankle surgery — NHS Fife
- Procedures in pain medicine clinical care standard — Faculty of Pain Medicine, ANZCA
- Options for chronic pain management — Healthdirect Australia