AUTHOR=Porta Francesco , Filippucci Emilio , Cipolletta Edoardo , La Grua Marco , Barni Xenia , Sirotti Silvia , Vreju Florentin Ananu TITLE=Efficacy of a single ultrasound-guided injection of high molecular weight hyaluronic acid combined with collagen tripeptide in patients with knee osteoarthritis and chondrocalcinosis JOURNAL=Frontiers in Medicine VOLUME=Volume 11 - 2024 YEAR=2024 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2024.1437160 DOI=10.3389/fmed.2024.1437160 ISSN=2296-858X ABSTRACT=Introduction Osteoarthritis (OA) and calcium pyrophosphate dihydrate crystal deposition (CPPD) often co-exist, this resulting in a clinical condition characterized by amplified inflammation and more severe and faster cartilage degeneration compared to osteoarthritis alone. Our study aims to explore the efficacy of a therapeutic approach that addresses both conditions, using a combination of a high molecular weight hyaluronic acid (HMWHA) and collagen tripeptide (CT). Additionally, safety profile and baseline characteristic predictive value were evaluated.Methods: We conducted a retrospective study on patients diagnosed with symptomatic knee OA (KOA) and CPPD treated by ultrasound (US) guided intraarticular injections of HMWHA-CT in the outpatient clinics of the