Type of shoulder dislocation as a predictor of the suitable injection approach to MR arthrography

Abstract EN

Background : shoulder arthrography is an accurate method that can help in diagnosing several diseases.

when shoulder arthrography is done in combination with magnetic resonance imaging (MRI), a more comprehensive assessment of the cartilaginous structures of the glenohumeral joint could be achieved.

objective : to compare the anterior and posterior arthrography injection approaches through the detection of the widest joint space in cases of anterior and posterior shoulder dislocations and to identify the suitable approach for MR arthrography.

subjects and methods : a total of eighty individuals were included in this study.

the average age of patients was thirty-two years old.

magnetic resonant images were used in the comparison of the measures of anterior and posterior joint spaces in different types of shoulder dislocations.

results : on measuring anterior space with reverse hill-sachs depth, it was significantly larger in patients with posterior dislocation (p < 0.05), 16.93 mm versus 8.24–9.02 mm, while posterior space with hill-sachs depth was significantly larger in patients with anterior dislocation (p < 0.05), 14.81 mm versus 5.9–8.2 mm.

conclusion : the anterior approach for MR arthrography in the case of posterior shoulder dislocation could be the optimized approach, and the posterior approach in the case of anterior shoulder dislocation could be the optimized approach.

further studies with a larger sample size are needed to confirm these results.