Ultrasonography for diagnosis of rotator cuff tear.
In this study the clinical usefulness of ultrasonography in the diagnosis of rotator cuff tears was assessed. One hundred twenty-two patients undergoing preoperative ultrasonography were evaluated surgically. Three different ultrasonographic machines were applied with a 7.5-MHz linear-array transducer. Surgery confirmed a sensitivity of 79% for full-thickness tears and 50% for partial thickness tears. In 73 patients with negative ultrasonographic findings, the specificity was 100% for full-thickness tears and 90% for partial-thickness tears. The diagnostic sensitivity for full-thickness tears of the Hitachi EUB-340 system was significantly lower than those of Hitachi EUB-415 and EUB-515, and thus the former cannot be recommended for detection of rotator cuff tears. The sensitivity with regard to partial-thickness tears was also significantly lower with the Hitachi EUB-340 system as compared to the Hitachi EUB-515. There were no significant differences in false-positive rate among the three machines used. In conclusion, accurate ultrasonographic diagnosis of rotator cuff tear requires a high-resolution machine, as well as considerable experience in interpretation.
Takagishi
K
K
Department of Orthopedic Surgery, School of Medicine, Kitasato University, Kanagawa, Japan.
Makino
K
K
Takahira
N
N
Ikeda
T
T
Tsuruno
K
K
Itoman
M
M
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001175:Arthrography; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care; D017006:Rotator Cuff / Q000000981:diagnostic imaging / Q000601:surgery; D000070636:Rotator Cuff Injuries; D012421:Rupture; D012680:Sensitivity and Specificity; D014159:Transducers; D014463:Ultrasonography