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Feasibility of Sonography for Intra‐articular Injections in the Knee Through a Medial Patellar Portal
Author(s) -
Im Sang Hee,
Lee Sang Chul,
Park Yong Bum,
Cho Sung-Rae,
Kim Jong Chan
Publication year - 2009
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.2009.28.11.1465
Subject(s) - medicine , knee joint , effusion , osteoarthritis , radiography , intra articular , joint effusion , radiology , nuclear medicine , surgery , hyaluronic acid , magnetic resonance imaging , anatomy , alternative medicine , pathology
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.