Title: CT and MRI Findings of Fatigue Fracture in the Proximal Segment of Tibia
Abstract: Objective To evaluate the CT and MRI findings and the mechanisms of fatigue fracture in the proximal part of tibia.Methods CT and MRI findings of 23 cases with fatigue fracture in the proximal part of tibia confirmed by operation and/or clinical diagnosis were retrospectively analyzed.All cases were undergone radiography and CT scans,7 cases underwent MRI.Results The fractures in 23 cases were all at 5.5 cm to 8.5 cm distant from the articular surface of tibia.On CT,monolayer,multilayer or lace-form periosteal reaction were found at the proximal part of the tibias in all cases,and there was umbilicated incisure at medial side near the middle of back part of the tibia.Oblique fracture lines in 16 cases,osteoporosis of the cortex in 20 cases and the density of medullary cavities in 23 cases were seen,there were no soft tissue masses.All the fracture lines and periosteal reaction were low signal intensity on T1WI and T2WI,the medullary cavities and the soft tissues near to the fracture lines were low signal intensity on T1WI and high signal intensity on T2WI,and the umbilicate incisure was strip low signal intensity on T1WI and T2WI.Conclusion The fatigue fracture of tibia has characteristic features and MRI is of significant value in early diagnosis.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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