Longitudinal stress fractures of the tibia: comparative study of CT and MR imaging |
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Authors: | A Feydy J-L Drapé E Beret L Sarazin E Pessis A Minoui A Chevrot |
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Institution: | Service de Radiologie B, H?pital Cochin, 27, rue du Faubourg Saint-Jacques, F-75 679 Paris Cedex 14, France, FR
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Abstract: | The aim of this study was to compare the performance of CT and MRI in the diagnosis of longitudinal stress fracture of the
tibia (LSFT). A retrospective study of imaging findings was performed in 15 patients with LSFT. The CT and MR images were
compared for detection of fracture line, callus, bone marrow edema, and soft tissues changes. The CT and MRI techniques allowed
the detection of the fracture line in 82 and 73 % of cases, respectively. The callus was always visualized with CT or MRI.
The MRI technique had a markedly higher sensitivity than CT in the detection of bone marrow edema (73 vs 18 %) and soft tissue
lesions (87 vs 9 %). This may cause a misleading aggressive appearance on MRI. Computed tomography remains the best imaging
modality for diagnosis of LSFT. However, MRI findings should be known to obviate the performance of CT or bone biopsy.
Received 26 May 1997; Revision received 1 October 1997; Accepted 13 November 1997 |
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Keywords: | : Tibia Fractures Fractures stress CT MRI Comparative studies |
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