Treatment information
Understanding your pathway
What is the treatment?
Genicular nerve blocks place medication near selected sensory branches supplying the knee region. They are different from injections inside the knee joint. A block may be used to assess a possible role for nerve-directed treatment or to seek temporary symptom change, depending on the individual plan. [1][2]
Who may be considered?
A specialist may consider a block for persistent knee pain after assessment and appropriate conservative care. The reason for pain, particularly after joint replacement, needs review. Infection or an implant problem should not be overlooked. A knee-pain label alone does not establish that a genicular procedure is appropriate. [1][2]
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. [3]
What happens during treatment?
The clinician identifies the intended nerve targets using an appropriate guided technique. Local anaesthetic is placed near selected branches, and response may be recorded during usual, permitted activities. The plan should distinguish a temporary block from radiofrequency ablation, which is a separate procedure with different effects and risks. [1][2]
Risks and safety considerations
Potential risks include bleeding, infection, bruising, medication reactions, numbness and unintended nerve or vessel injury. Temporary weakness or altered sensation can affect safe walking. Explain any diabetes, anticoagulant treatment or previous surgery so the assessment and aftercare can account for these factors. [1][2]
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. [4][3]
Expected benefit and limitations
Relief may be absent or temporary. A successful block does not guarantee that ablation will help, and neither procedure restores cartilage. Exercise-based care and other osteoarthritis management remain important where relevant. Review walking, stairs and daily activity alongside pain when judging whether the intervention has been worthwhile. [1][2]
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. [3][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.
- Genicular nerve block with or without radiofrequency ablation — Wrightington, Wigan and Leigh Teaching Hospitals NHS Foundation Trust
- Osteoarthritis in over 16s: recommendations — NICE
- Procedures in pain medicine clinical care standard — Faculty of Pain Medicine, ANZCA
- Dorsal root ganglion / nerve root block / transforaminal injection — Hull University Teaching Hospitals NHS Trust
- Options for chronic pain management — Healthdirect Australia