IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Posterior dislocation of the shoulder

Case contributed by Mostafa Elfeky
Diagnosis certain

Presentation

Right shoulder trauma.

Patient Data

Age: 35
Gender: Male

CT right shoulder

ct

The right humeral head is internally rotated and the articular surface is facing posteriorly (posterior dislocation). The anteromedial aspect of the articular surface is impacted against the posterior edge of glenoid labrum with resultant small compression fracture (reverse Hill Sachs lesion).

MRI Rt shoulder postreduction

mri

After reduction of dislocation, there is edema at the right humeral head with still noted reverse Hill Sachs fracture as evident by depression of the anteromedial aspect of humeral head.

The posteroinferior glenoid labrum showed linear tear representing reverse Bankart lesion.  It remains attached to the capsule and periosteum.

Mild joint effusion.

Case Discussion

This case demonstrates posterior dislocation of the humeral head with reverse Hill Sach's lesion and engagement of the glenoid. MRI showed marrow edema of femoral head, Hill Sach's lesion as well as reverse Bankart lesion

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.