Genicular Artery Embolization for Knee Osteoarthritis Outcomes and Predictors: Scoping Review with ☸️SAIMSARA

Name: SAIMSARA Evidence Object pain::GENICULAR_ARTERY_EMBOLIZATION_PM
Creator: SAIMSARA
License: https://saimsara.com/license/

SAIMSARA

doi:10.62487/saimsara62f60db4

SAIMSARA Journal

Machine-Readable Science • ISSN 3054-3991

Genicular Artery Embolization for Knee Osteoarthritis Outcomes and Predictors: Scoping Review with ☸️SAIMSARA

Pain Medicine

Issue 6, Volume 1, 2026

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DOI: 10.62487/saimsara62f60db4

Editorial note

• Last update: 2026-06-04 22:21:26

What is this paper about

Genicular artery embolization shows a strong 6-month pain-relief signal in single-arm studies, but conflicting sham-controlled trials challenge whether the benefit truly lasts beyond placebo at 1 year. The full review explains who may actually benefit, why less advanced radiographic arthritis predicts response, how embolic agents differ, and whether this minimally invasive option deserves a place in the knee osteoarthritis treatment pathway.

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Abstract: To comprehensively map the available evidence on genicular artery embolization (GAE), synthesizing findings on clinical outcomes, technical approaches, prognostic factors, and safety across all indications, study designs, and embolic agents. The review uses 97 references and builds its evidence map from 105 original studies with 11748 total participants/sample observations (topic-deduplicated ΣN). Across a heterogeneous body of largely single-arm evidence, GAE is consistently associated with short-to-intermediate-term improvements in knee pain and function, with a descriptive median VAS reduction of approximately 40 mm at 6 months in prospective cohorts. The most replicated signal indicates that lower Kellgren-Lawrence grade predicts a more favorable response, supporting a role for GAE as an early-intervention strategy before advanced structural damage develops. However, conflicting sham-controlled trials—a clear benefit at 1 month yet no between-group difference at 12 months—highlight substantial uncertainty about durable efficacy beyond placebo. Reported adverse events were predominantly minor and self-limiting, suggesting an acceptable safety profile that may favor patient selection over watchful waiting. Adequately powered, standardized sham-controlled trials with validated response criteria and longer follow-up are needed to clarify true treatment effect and durability.
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Keywords: Genicular artery embolization; Knee osteoarthritis; Pain management; Ethiodized oil emulsion; Embolic agents; Clinical success predictors; Synovial inflammation; Cost-effectiveness analysis; Adverse events; Radiographic severity

Review Stats

Final search date and database lock: 2026-06-04 13:10:47 CEST
Plan: Pro (expanded craft tokens; source: PubMed)
Source: PubMed
Total Abstracts/Papers: 206
Downloaded Abstracts/Papers: 206
Included original and non-original Abstracts/Papers (all): 184
Included original Abstracts/Papers (Vote counting by direction of effect): 105
Reference Index (links used in paper): 97
Total participants/sample observations (topic deduplicated ΣN): 11748

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Reference Index (98)

[1] Genicular artery embolization for treatment of knee osteoarthritis pain: Systematic review and meta-analysis. — https://doi.org/10.1016/j.ocarto.2023.100342
[2] Genicular artery embolization for knee osteoarthritis: Results of the LipioJoint-1 trial. — https://doi.org/10.1016/j.diii.2023.12.003
[3] Multicenter Randomized Sham Controlled Study of Genicular Artery Embolization for Knee Pain Secondary to Osteoarthritis. — https://doi.org/10.1016/j.jvir.2021.09.019
[4] Genicular artery embolization for symptomatic knee osteoarthritis: New perspectives on the temporary-permanent dilemma. — https://doi.org/10.1016/j.diii.2023.12.004
[5] Genicular Artery Embolization Data Review. — https://doi.org/10.1016/j.tvir.2022.100880
[6] Genicular Artery Embolization: A Review of Essential Anatomic Considerations. — https://doi.org/10.1016/j.jvir.2023.12.010
[7] Lipiodol Versus Imipenem/Cilastatin in Genicular Artery Embolization: A Retrospective Study on Safety and Clinical Success. — https://doi.org/10.1007/s00270-024-03836-4
[8] Knee pain improvement after genicular artery embolization for the management of knee osteoarthritis: an updated systematic review and meta-analysis of 21 studies. — https://doi.org/10.1007/s00117-024-01388-9

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