Multidetector computed tomography evaluation of bony fragments and donor sites in XXXX .

@entity1 @entity8043
BACKGROUND: @entity8043 is frequently associated with bony fragments that are difficult to see on radiographs. MRI or MDCT are often used to rule out or characterize these bony fragments. PURPOSE: To assess the use of MDCT for locating bony fragments and donor sites in @entity1 with @entity8043 , and to test whether sizes and quantity of bony fragments differ between first-time dislocations and recurrent dislocations. MATERIAL AND METHODS: Retrospective data from two hospitals during a 96-month period were collected, and a total of 46 @entity1 (mean age 27 years, range 9-69 years) that had sustained an @entity8043 (22 first-time, 24 recurrent) were identified. Size, location and donor site of bony fragments were evaluated on MDCT images. Surgical correlation was available for 22 of 46 @entity1 . RESULTS: On MDCT images, the likely donor site could be identified in 62 of 71 (87%) bony fragments. Of the bony fragments that were seen on MDCT images, 40 of 68 (59%) were not seen on AP and lateral views of the conventional radiographs. There was no significant difference in size of bony fragments between first-time or recurrent dislocators (p=0.77). The average number of bony fragments were 2.1 and 1.0 in first-time and recurrent dislocators, respectively. The location and donor site of bony fragments was similar between two @entity1 groups. CONCLUSION: MDCT is a suitable imaging method to locate bony fragments and donor sites. The number of bony fragments seems to be higher in first-time dislocators than recurrent dislocators, otherwise findings between the two @entity1 groups were similar.
