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The feasibility and short-term curative effect of the genicular arterial embolization treatment for moderate to severe knee pain secondary to osteoarthritis

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Author:
No author available
Journal Title:
Chinese Journal of Radiology
Issue:
12
DOI:
10.3760/cma.j.cn112149-20210419-00386
Key Word:
膝骨关节炎;膝动脉栓塞术;WOMAC评分;Knee osteoarthritis;Genicular arterial embolization;WOMAC index

Abstract: Objective:To investigate the safety and efficacy of transcatheter genicular artery embolization (GAE) for moderate to severe knee osteoarthritis (KOA).Methods:This prospective study included 13 patients (17 knees) with KOA who were treated with GAE from October 2020 to March 2021. The Kellgren-Lawrence (K-L) grade was 2-3 for 11 knees, and 4 for 6 knees. The Western Ontario and McMaster Universities osteoarthritis index (WOMAC) and the Whole-Organ Magnetic Resonance Imaging Score (WORMS) assessments were performed for all the subjects before operation. The success rate, clinical efficacy and complications were recorded after operation. Clinical outcomes were evaluated at 1 day, 1week and 1, 3, 6 months after the operation.Results:The success rate of GAE in 17 cases was 100%, and the success rate of target artery superselection was 98.4%(63/64). The baseline WOMAC pain score was 11(10, 13) and total score was 44(38, 58) for 17 knees. Post-operation follow-up WOMAC pain score were 4(3, 7), 2(1, 5), 2(1, 6) and 4(2, 6) at 1 day, 1 week, 1 month, and 3 months. Post-operation follow-up WOMAC total score were 22 (15, 34),20 (12, 24),17 (12, 26) and 20 (12, 31) at 1 day, 1 week, 1 month, and 3 months. There were 16 knees with 6 month follow-up assessment, with the WOMAC pain score of 2.5(2, 5), and the total score of 15(12, 26). Significant difference was found in the WOMAC pain score between baseline and the 1 day, 1 week, 1, 3 and 6 months follow up ( Z=-3.631, -3.623, -3.622, -3.622, -3.532, all P<0.001); also, the total score was statistically significant different between the baseline and the 1 day, 1 week, 1, 3 and 6 months follow up ( Z=-3.639, -3.634, -3.646, -3.527, -3.532, all P<0.001). At 3 months follow-up, there was 1 knee recognized clinical failure. Post-operative adverse reaction in this group included skin ecchymosis in femoral artery puncture area ( n=3), knee joint stiffness and pain within 1 week ( n=4),and clanging joints during postoperative activities ( n=6). Conclusion:GAE is a feasible and safe procedure with obvious short-term curative effect, which can alleviate pain symptoms and improve restricted movement in patients with KOA.

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