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Tubular Acetabular Intraosseous Contrast Tracking in MR Arthrography of the Hip: Prevalence, Clinical Significance, and Mechanisms of Development

¹ Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, 5 Fu-Hsing St., Gui-Shan, Tao-Yuan 33300, Taiwan.
² Department of Radiology, Musculoskeletal Section, University of California Davis School of Medicine, Sacramento, CA.
³ Department of Orthopedics, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taiwan.

OBJECTIVE. The purpose of this study was to describe tubular intraosseous tracking of contrast medium in the acetabular fossa, to our knowledge a previously undocumented imaging finding in MR arthrography of the hip, and to discuss its prevalence, clinical significance, and possible mechanisms of development.

CONCLUSION. Tubular acetabular intraosseous contrast tracking is a common MR arthrographic finding that seems to have little clinical significance. Although the exact pathophysiologic mechanism is unknown, we presume repeated pumping of joint fluid through the nutrient foramina of the acetabular fossa may be one mechanism.

Keywords: hip • MR arthrography

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				S. Sampatchalit, L. Chen, P. Haghighi, D. Trudell, and D. L. Resnick Changes in the Acetabular Fossa of the Hip: MR Arthrographic Findings Correlated With Anatomic and Histologic Analysis Using Cadaveric Specimens Am. J. Roentgenol., August 1, 2009; 193(2): W127 - W133. [Abstract] [Full Text] [PDF]