Ultrasound versus magnetic resonance arthrography in acetabular labral tear diagnostics: a prospective comparison in 20 dysplastic hips.
BACKGROUND
Acetabular labral tears are highly associated with hip dysplasia. Magnetic resonance arthrography (MR arthrography) is the expensive and time-consuming contemporary gold-standard method in the radiological assessment of acetabular labral tears.


OBJECTIVE
To assess the diagnostic ability of noninvasive ultrasound (US) examination compared to MR arthrography in diagnosing acetabular labral tears in dysplastic hip joints.


METHODS
The study compared US examination and MR arthrography diagnosis of labral tears in 20 consecutively referred dysplastic hip joints.


RESULTS
The ability to diagnose acetabular labral tears upon US examination was calculated: sensitivity 44%, specificity 75%, positive predictive value 88%, and negative predictive value 25%.


CONCLUSIONS
The ability of US examination in diagnosing acetabular labral tears is not yet good enough. The technique is still to be developed, and more experience, especially with the interpretation of US examinations, is needed.
Troelsen
A
A
Orthopedic Research Unit and Department of Radiology, University Hospital of Aarhus, Aarhus, Denmark.
Jacobsen
S
S
Bolvig
L
L
Gelineck
J
J
Rømer
L
L
Søballe
K
K
D000077:Acetabulum / Q000000981:diagnostic imaging / Q000473:pathology*; D000293:Adolescent; D000328:Adult; D003287:Contrast Media; D005260:Female; D006617:Hip Dislocation / Q000000981:diagnostic imaging / Q000473:pathology*; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D014463:Ultrasonography
D003287:Contrast Media