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ID 116001
Title Alternative
MRI of Early-Stage Lumbar Spondylolysis
Author
Manabe, Hiroaki Tokushima University
Goto, Tsuyoshi Tokushima Bunri University
Keywords
MRI
lumbar spine
pediatric
spondylolysis
stress fracture
Content Type
Journal Article
Description
Purpose : To analyze extraosseous signal changes (ESCs) on magnetic resonance imaging (MRI) in pediatric patients with stress fractures occurring in the lamina. Methods : This study was a retrospective review of 69 consecutive pediatric patients with stress fractures occurring in the lamina. We analyzed MRI scans obtained at the first presentation. Results : We used mainly axial short tau inversion recovery images acquired through the pedicle of these 84 fracture sites to identify the ESCs. These were then divided into three groups: “invisible” when no ESC was detected, “periosteal” for ESC seen on only the dorsal side of the lamina, and “perimuscular” for ESC distinctly spread around / in the paravertebral muscles. In total, 78 (92.9%) fracture sites showed ESCs on the dorsal side of the lamina among which 72 ESCs were located on only the “dorsal” side, while 6 ESCs were on the ventral side against the transverse process. Conclusion : ESCs on MRI were detected in more than 90% of patients before stress fracture became apparent in the lamina, which was considered similar to findings of periosteal thickening / edema detected at the onset of stress fracture in long bone.
Journal Title
The Journal of Medical Investigation
ISSN
13496867
13431420
NCID
AA11166929
Publisher
Tokushima University Faculty of Medicine
Volume
68
Issue
1-2
Start Page
136
End Page
139
Sort Key
136
Published Date
2021-02
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Publisher
departments
Medical Sciences
University Hospital