Presentation
Instability in shoulder posterior dislocation.
Patient Data
Age: 25 years
Gender: Male
From the case:
Reverse Perthes lesion
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Right shoulder MRI arthrogram
Posterior labroligamentous avulsion in the 6-9 o'clock position with a medially stripped intact periosteum.
There is also a reverse Hill-Sachs lesion of the anterior side of the humeral head.
From the case:
Reverse Perthes lesion
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Posterior labroligamentous avulsion in the 6-9 o'clock position with a medially stripped intact periosteum.
Case Discussion
The Perthes lesion is a variation of the Bankart lesion, where the scapular periosteum is lifted and stripped medially with the detached labrum. The labrum may appear to be in a normal position at surgery but is still unstable.
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