Nexsphere-F™ Clinical Study Published in Radiology, Showing 57% Reduction in Knee Osteoarthritis Pain

About this update from Nextbiomedical Co. Ltd.

SEOUL, South Korea, July 6, 2026 /PRNewswire/ -- NEXTBIOMEDICAL CO., LTD. (KOSDAQ: 389650), an innovative medical device company based in South Korea, announced today that Radiology, the leading peer-reviewed journal in radiology and medical imaging with an impact factor of 17.6, has published clinical results for Nexsphere-F™, the Company's fast-resorbable microsphere for embolization. The study, titled "Genicular Artery Embolization Using Rapidly Resorbable Gelatin-based Microspheres for Osteoarthritis-related Knee Pain," was conducted by researchers at Charité – Universitätsmedizin Berlin, ranked eighth on Newsweek's World's Best Hospitals 2026 list. The Company believes this is the largest prospective, single-center observational study to date evaluating genicular artery embolization (GAE) using a resorbable embolic agent. The prospective study enrolled 194 patients with knee osteoarthritis who had not responded to conventional conservative treatments, including corticosteroid and hyaluronic acid injections, and evaluated the safety and clinical outcomes of GAE performed with Nexsphere-F™. Prospective studies, which follow patients according to a predetermined protocol, are widely regarded as providing a higher level of clinical evidence than retrospective analyses. Across 239 procedures, GAE using Nexsphere-F™ achieved a 100% technical success rate. Patients' pain scores, measured on the Numeric Rating Scale, decreased from a median of 7 before the procedure to 3 at 12 months post-procedure, a 57% reduction. Knee function and quality of life, assessed using the Knee Injury and Osteoarthritis Outcome Score (KOOS), improved significantly across all measures, with approximately 80% of patients achieving a minimum clinically important difference (MCID). No moderate or severe procedure-related adverse events were reported. NEXTBIOMEDICAL expects the results to support its expansion into the European market, where Nexsphere-F™ holds CE marking under the Medical Device Directive (CE-MDD). The clinical data is also expected to serve as key evidence for future efforts to expand insurance reimbursement and adoption among medical institutions. In the United States, the RESORB clinical trial to support FDA approval is currently underway and progressing smoothly. The study's authors described Nexsphere-F™ as a novel embolic agent that offers a favorable balance o...

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