Genicular Nerve Block
PAIN CONDITION
The term “genicular” means “relating to the knee”.[1] There is a collection of genicular or knee nerves that are called superior medial, inferior medial, inferior lateral and superior lateral.[1] If any of them are damaged or irritated, you’ll experience knee pain, but a genicular nerve block (GNB) can help alleviate this.
Pain specialists can target the affected nerve with a GNB to numb the overactive nerve and relieve chronic, stubborn knee pain.[2] You may also hear this procedure called a genicular nerve injection, genicular neurotomy or diagnostic knee block. It’s often used to both diagnose and treat knee pain, especially when surgery isn’t an option.[3; 2]
How Genicular Nerve Blockades Work
Your pain management specialist uses imaging guidance, such as fluoroscopy (X-ray) or ultrasound, during a GNB procedure to precisely place a small needle near the genicular nerves around your knee.[4] A local anesthetic, sometimes combined with a steroid, is injected to numb the nerves and quiet pain signals traveling to the brain.[5]
The anesthetic typically starts working within minutes to hours, providing targeted relief right where you need it.[1] For some patients, the effects may last days or weeks.
If you respond well, your doctor may recommend a longer-lasting procedure, like radiofrequency ablation (RFA), which can “turn off” these nerves for a more extended time period.[2]
Conditions Treated with Genicular Nerve Knee Injection
GNBs are used to treat chronic, acute and postoperative knee pain.[1; 5] Your knee is the main weight-bearing joint that takes a lot of abuse from wear and tear in everyday life, sports, and demanding jobs. Lifestyle changes and traditional care can help, but when it’s not enough, a nerve block may ease the pain of the following conditions:
- Knee osteoarthritis (KOA) [6]
- Postsurgical pain (after partial or total knee replacement) [6]
- Knee injuries (ligament or meniscus damage) [2]
- Chronic knee pain with no definitive cause [3]
- Failed knee surgery
- Knee tendinitis
- Chronic knee pain when the patient is not a surgery candidate [7]
By calming irritated nerves, the injection can both reduce pain and help confirm whether the genicular nerves are the true source of your discomfort.
Benefits of Genicular Blockades
Your knees work overtime to keep you moving, so if you’re living with pain that limits your mobility or independence, a GNB may help. This powerful procedure offers essential benefits such as:
- Targeted Pain Relief: The injection works right at the nerves causing pain instead of affecting your whole body [4]
- Diagnostic Insight: If your pain improves after the injection, it confirms your genicular nerves are involved, helping guide next steps
- Reduced Reliance on Medication: By providing relief without systemic drugs, nerve blocks may lower your need for opioids or anti-inflammatories [2]
- Minimally Invasive and Fast Recovery: Most patients go home the same day and return to normal activities quickly [1]
- Bridge to Longer-Lasting Care: Successful nerve blocks can lead to procedures like radiofrequency ablation for extended pain control [1]
Consult a Genicular Neurotomy Pain Specialist for Pain Management
You may be a good candidate for a genicular nerve block if your knee pain hasn’t improved with medications, injections, physical therapy or if surgery isn’t an option for you. It’s also commonly recommended when exam results suggest that overactive genicular nerves are the primary source of your pain.
Your treatment results are enhanced when you choose a pain specialist who understands that managing pain requires a whole-body approach. They’ll combine your nerve block with other conventional and alternative treatments such as physical therapy, lifestyle changes, mind-body exercises, talk therapy, and other interventional pain management options.
Don’t let your knee stop you from walking, moving, or enjoying life. Talk to your pain management physician today to find out if a genicular nerve block could be the breakthrough your knees have been waiting for.
Frequently Asked Questions About Genicular Nerve Block
How can I tell whether Genicular Nerve Block is helping?
Before Genicular Nerve Block, identify two or three measurable goals such as sleeping longer, walking farther, sitting through work, using less rescue medication, or completing a specific daily task. After treatment, record both symptom changes and functional changes over the timeframe provided by the clinician. Improvement may be immediate, gradual, partial, or temporary depending on the treatment. A structured record is more useful than relying on a single pain score and helps the care team decide whether to continue, modify, or stop the approach.
What questions should I ask when comparing Genicular Nerve Block with alternatives?
Ask how Genicular Nerve Block fits the suspected pain source, what level and duration of improvement are realistic, what evidence supports its use for the specific diagnosis, and which risks matter most for your health history. Compare recovery demands, the need for repeat care, cost, and what happens if the treatment is unsuccessful. It is also reasonable to ask about doing nothing immediately or trying a less invasive option first. A useful decision reflects the patient’s goals and preferences as well as technical eligibility.
How should follow-up be planned after starting Genicular Nerve Block?
Follow-up after Genicular Nerve Block should occur at a time when the expected response can be evaluated meaningfully. The care team should explain what changes may occur first, what information to track, which activities or medicines require special instructions, and whom to contact with concerns. Bring a record of symptom relief, function, side effects, and any new medical events to the visit. Earlier contact is appropriate for unexpected severe symptoms, while routine questions can usually be addressed at the planned reassessment.
What should I ask my insurer about coverage for Genicular Nerve Block?
Coverage for Genicular Nerve Block varies by plan, diagnosis, prior treatment requirements, provider network, and whether authorization is needed. Before scheduling, ask the insurer and treating practice about medical-necessity criteria, required records, facility and professional fees, medication or device charges, and expected out-of-pocket costs. An authorization is not always a guarantee of payment, so retain reference numbers and written estimates. If coverage is denied, ask which reason was given and whether additional documentation or an appeal is available.
Which records should I bring when discussing Genicular Nerve Block?
Useful records for a consultation about Genicular Nerve Block may include imaging and reports, procedure or operative notes, medication history, rehabilitation summaries, allergy information, and a list of prior treatments with their results. Device information and relevant laboratory or nerve-test reports may also matter. Organize documents chronologically and identify the current functional problem you want addressed. Complete records help the clinician avoid repeating ineffective care and determine whether the treatment matches the suspected source of pain.
What happens if Genicular Nerve Block does not provide enough relief?
An incomplete response to Genicular Nerve Block does not automatically mean that no other options remain. The clinician may reassess the diagnosis, confirm whether enough time has passed to judge the result, review technique or adherence, and look for more than one source of pain. The next step might involve rehabilitation, medication adjustment, a different targeted treatment, further testing, or referral to another specialist. Repeating an ineffective treatment without a clear reason is generally less useful than reviewing why the expected goals were not met.
Can Genicular Nerve Block be repeated or continued long term?
Whether Genicular Nerve Block can be repeated or continued depends on what the treatment involves, the benefit achieved, side effects, cumulative risks, and available alternatives. Some treatments are designed as a limited trial, some can be repeated at clinically appropriate intervals, and others are intended as one-time procedures with ongoing follow-up. Patients should ask what result would justify another treatment and whether there is a recommended limit. Continued use should be based on documented improvement in function or quality of life, not routine scheduling alone.
What should my other healthcare clinicians know about Genicular Nerve Block?
Clinicians managing other health conditions should know that Genicular Nerve Block is planned or has been performed, particularly when they prescribe blood thinners, diabetes medication, immune-suppressing drugs, sedatives, or other medicines that may affect safety. Share the treatment date, medication or device details when relevant, and the name of the treating practice. Patients should not stop a prescription on their own. Coordinating information among clinicians helps prevent conflicting instructions and supports safer decisions before and after treatment.
Resources:
- Genicular Nerve Block. Cleveland Clinic [Internet]. Accessed August 30, 2025. Available from:https://my.clevelandclinic.org/health/treatments/24823-genicular-nerve-block
- Kim DH, Choi SS, Yoon SH, et al. Ultrasound-Guided Genicular Nerve Block for Knee Osteoarthritis: A Double-Blind, Randomized Controlled Trial of Local Anesthetic Alone or in Combination with Corticosteroid. Pain Physician [Internet]. 2018; 21:41-51. ISSN 1533-3159 Accessed August 30, 2025. Available from: https://www.painphysicianjournal.com/current/pdf?article=NTAwNg%3D%3D&journal=109
- Li Z, Bai Y, Liu C, Gu Y. Efficacy and Temporal Dynamics of Genicular Nerve Block in Primary and Secondary Knee Osteoarthritis for Pain and Function: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Pain Res [Internet]. 2025;18:3037-3048. Published 2025 Jun 17. doi:10.2147/JPR.S518315 Accessed August 30, 2025. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC12182070/
- Genicular Nerve Blocks. New York School of Regional Anesthesia NYSORA [Internet]. Published July 5, 2021. Accessed August 30, 2025. Available from: https://www.nysora.com/techniques/lower-extremity/nysora-com-genicular-nerve-blocks
- Eberle M, Kazi F, Ervin K, et al. The Genicular Nerve Block for Knee Pain in the Emergency Department. American College of Emergency Physicians ACEP [Internet]. Published October 19, 2023. Accessed August 30, 2025. Available from: https://www.acep.org/emultrasound/newsroom/oct2023/the-genicular-nerve-block-for-knee-pain-in-the-emergency-department
- Bhargava, M., Gaur, R., Gonnade, N.M. et al. Comparing effectiveness of 3-needle approach versus 5-needle approach of genicular nerve block on pain and quality of life in chronic osteoarthritis of knee: a double-blinded randomised controlled trial. BMC Musculoskelet Disord [Internet]. 25, 978 (2024). https://doi.org/10.1186/s12891-024-07938-5 Accessed August 30, 2025. Available from: https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/s12891-024-07938-5
- Hasoon J, Orhurhu VJ, Yazdi C. Genicular Nerve Blocks for the Management of Chronic Knee Pain Related to Osteoarthritis – A Case Series. Orthopedic Reviews [Internet]. 2024;16. doi:https://doi.org/10.52965/001c.126046 Accessed August 30, 2025. Available from: https://orthopedicreviews.openmedicalpublishing.org/article/126046-genicular-nerve-blocks-for-the-management-of-chronic-knee-pain-related-to-osteoarthritis-a-case-series