Introduction: Subchondral insufficiency fracture of the femoral head (SIF) may be confused with osteonecrosis of the femoral head (ON) due to clinical and imaging similarities. Materials and methods: Contrast-enhanced MR images in patients with SIF (ten hips in ten patients) were retrospectively reviewed and compared with those from patients with ON (ten hips in six patients). Results: Low-signal intensity bands on T1-weighted images were present within the femoral head in all hips examined. The segment proximal to the band was contrast-enhanced following IV gadolinium administration in nine of ten hips (90%) with SIF and in none of the 10 hips with ON. Conclusion: These results suggest that the presence of contrast enhancement in the segment proximal to the low-signal intensity band in the femoral head may serve as a supplemental diagnostic measure for the differentiation of SIF from ON. © Springer-Verlag 2008.
CITATION STYLE
K., M., T., H., S., K., H., M., H., W., & T., T. (2009). Contrast-enhanced MR imaging of subchondral insufficiency fracture of the femoral head: A preliminary comparison with that of osteonecrosis of the femoral head. Archives of Orthopaedic and Trauma Surgery. K. Miyanishi, Department of Orthopaedic Surgery, Kyushu Rosai Hospital, 1-3-1 Kuzuharatakamatsu, Kokuraminami-ku, Kitakyushu 800-0296, Japan. E-mail: keitamiya@jcom.home.ne.jp: Springer Verlag (Tiergartenstrasse 17, Heidelberg D-69121, Germany). Retrieved from http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=reference&D=emed9&NEWS=N&AN=2009174457
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