Ma. Kliewer et al., ACUTE SPINAL LIGAMENT DISRUPTION - MR-IMAGING WITH ANATOMIC CORRELATION, Journal of magnetic resonance imaging, 3(6), 1993, pp. 855-861
Disruption of spinal ligaments can lead to instability that jeopardize
s the spinal cord and nerve roots. Magnetic resonance (MR) imaging can
directly image spinal ligaments; however, the sensitivity with which
this modality demonstrates ligament injury has, to the authors' knowle
dge, not been reported. On a biomechanical testing machine, 28 cadaver
ic spines were subjected to controlled injury that resulted in ligamen
t tears. The spines were then imaged with plain radiography, computed
tomography, and MR imaging (1.5 T). The images were analyzed for evide
nce of ligament injury before dissection of the specimen. Forty-one of
52 (79%) ligament tears of various types were correctly identified at
MR imaging. Disruptions of the anterior and posterior longitudinal li
gaments were most conspicuous and were detected in all seven cases in
which they were present (no false-positive or false-negative results);
disruptions of the ligamentum flavum, capsular ligaments, and intersp
inous ligaments could also be identified but less reliably (three fals
e-positive and 11 false-negative results). That MR imaging can reliabl
y and directly allow assessment of spinal ligament disruption In this
in vitro model suggests its potential utility for this assessment in p
atients.