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Comparison of Sonographically Guided Intra‐articular Injections at 3 Different Sites of the Knee
Author(s) -
Park Yongbum,
Lee Sang Chul,
Nam Hee-Seung,
Lee Jihae,
Nam Sang Hyun
Publication year - 2011
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.2011.30.12.1669
Subject(s) - medicine , lidocaine , intra articular , osteoarthritis , nuclear medicine , soft tissue , radiography , radiology , surgery , pathology , alternative medicine
Objectives Sonographically guided injections show more accuracy than blind injections, but there are no reports comparing sonographically guided intra‐articular injection approaches. This study examined the accuracy of sonographically guided intra‐articular injections at 3 different sites of the knee using medial, midlateral, and superolateral portals. Methods Sonographically guided intra‐articular injections and radiology evaluations were performed on 126 knees with osteoarthritis (Kellgren‐Lawrence grade 2 or 3). Six milliliters of mixed material containing 1% lidocaine (1 mL), 20 mg of triamcinolone (1 mL), and a nonionic contrast agent (4 mL) was injected into the intra‐articular space of the knee through the medial, midlateral, and superolateral portals. After the sonographically guided intra‐articular injection into the knee joint, a radiographic image was taken to determine whether the injected material had reached the intra‐articular space or infiltrated into the soft tissue. Results Sonographically guided intra‐articular injections in the midlateral portal (95%; P < .05) and superolateral portal (100%; P < .05) showed significantly higher accuracy than injections in the medial portal (75%). Conclusions Sonographically guided intra‐articular injections in the midlateral or superolateral portal may increase the accuracy of knee joint injections.