Accuracy of blind versus ultrasound-guided suprapatellar bursal injection.
OBJECTIVE
To compare the accuracy rates between ultrasound (US)-guided and blind knee intra-articular injection via the suprapatellar bursa.


METHODS
Ninety-nine patients with radiographically confirmed knee osteoarthritis (Kellgren/Lawrence grade 2 or 3) without effusion were included. Fifty patients were assigned to the US-guided injection group and 49 to the blind injection group. After a US-guided or blind injection of hyaluronic acid (HA) and contrast dye through the suprapatellar bursa into the knee joint, a radiographic image was obtained in each case to ascertain whether all injected material had reached the intra-articular space.


RESULTS
US-guided HA injection exhibited a significantly greater accuracy (48 of 50 knees, 96.0%) than blind injection (41 of 49 knees, 83.7%).


CONCLUSIONS
Intra-articular injections through the suprapatellar bursa under US guidance increased the accuracy of knee joint injections.
Department of Physical Medicine & Rehabilitation, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, South Korea.
Yong
Y
Bum Park
Won
W
Ah Choi
Yong-Kyun
YK
Kim
Sang
S
Chul Lee
Ji
J
Hae Lee
D000368:Aged; D002061:Bursa, Synovial; D005260:Female; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage* / Q000627:therapeutic use; D007270:Injections, Intra-Articular / Q000379:methods; D007719:Knee Joint / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000188:drug therapy*; D011446:Prospective Studies; D011859:Radiography; D016037:Single-Blind Method; D018084:Ultrasonography, Interventional; D055676:Viscosupplementation / Q000379:methods*; D055675:Viscosupplements / Q000008:administration & dosage* / Q000627:therapeutic use
D055675:Viscosupplements; D006820:Hyaluronic Acid