Alessandro Stecco MD, Presenter: Nothing to Disclose

Elena Guenzi, Abstract Co-Author: Nothing to Disclose

Francesco Fabbiano, Abstract Co-Author: Nothing to Disclose

Teresa Cascone MD, Abstract Co-Author: Nothing to Disclose

Paolo Fornara MD, Abstract Co-Author: Nothing to Disclose

Alessandro Carriero, Abstract Co-Author: Nothing to Disclose

CT is the gold standard for the evaluation of glenoid bone loss in patients with gleno-humeral dislocation. Aim of this study was to assess if MR can quantify the bone loss area, without significant differences compared to CT.

23 patients with one or more episodes of unilateral post-traumatic gleno-humeral dislocation underwent both MR and CT scan. The MPR sagittal CT reconstruction and sagittal MR images were acquired for glenoid area and glenoid bone loss, the latter calculated using “Pico” method. Means, Percentage, Cohen’s kappa coefficient and Bland-Altman plot were evaluated as statistical validation of the working hypothesis.

Mean area of the circumferential glenoid surface was 575.29 mm2 by MR and 573.76 mm2 by CT, and mean glenoid deficit were 4.38 % and 4.34 %, respectively. Inter-operator agreement was satisfactory (k>0.81) and variability coefficient of the mean value was <5 % in both MR and CT. The two sets of measurements were within 2 standard deviations.

MR is a valid alternative to CT in the measurement of glenoid bone deficit in patients with gleno-humeral dislocation.

These data allows to let a "one stop shop" overall evaluation in MRI, both of capsuloligamentous lesions and of bone loss.

Stecco, A, Guenzi, E, Fabbiano, F, Cascone, T, Fornara, P, Carriero, A, MRI Can Assess Glenoid Bone Loss after Shoulder Luxation: Inter- and Intra-individual Comparison vs CT.  Radiological Society of North America 2012 Scientific Assembly and Annual Meeting, November 25 - November 30, 2012 ,Chicago IL. http://archive.rsna.org/2012/12022331.html