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CONTROLLED CLINICAL TRIAL
JOURNAL ARTICLE
Feasibility of sonography for intra-articular injections in the knee through a medial patellar portal.
Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine 2009 November
OBJECTIVE: The purpose of this study was to investigate the feasibility of using real-time high-resolution sonography to guide an injection needle into the intra-articular space within the knee.
METHODS: Eighty-nine patients with radiographically confirmed knee osteoarthritis (Kellgren-Lawrence grade 2 or 3) without an effusion were included. After sonographically guided or blind injection of hyaluronic acid (HA) and contrast dye through a medial patellar portal (MPP) into the knee joint, a radiographic image was made to ascertain whether the injected material had reached the intra-articular space.
RESULT: Sonographically guided injections of HA into the knee joint had a significantly greater accuracy rate (95.6%) than blind injections (77.3%; P = .01).
CONCLUSIONS: Intra-articular injections via an MPP using sonographic guidance may raise the accuracy rate in knee joint injections.
METHODS: Eighty-nine patients with radiographically confirmed knee osteoarthritis (Kellgren-Lawrence grade 2 or 3) without an effusion were included. After sonographically guided or blind injection of hyaluronic acid (HA) and contrast dye through a medial patellar portal (MPP) into the knee joint, a radiographic image was made to ascertain whether the injected material had reached the intra-articular space.
RESULT: Sonographically guided injections of HA into the knee joint had a significantly greater accuracy rate (95.6%) than blind injections (77.3%; P = .01).
CONCLUSIONS: Intra-articular injections via an MPP using sonographic guidance may raise the accuracy rate in knee joint injections.
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