An engaged Hill-Sachs lesion is a specific type of shoulder injury. It occurs when a defect on the humeral head (the top part of the upper arm bone) engages with the glenoid (the socket part of the shoulder blade) during certain arm movements. This injury is commonly associated with shoulder instability and is often seen in people who have had a shoulder dislocation.


The "engagement" in this context refers to the situation where the humeral head defect aligns with and impacts against the glenoid rim during shoulder movement, particularly when the arm is lifted and externally rotated. This can cause pain, a feeling of instability, and can contribute to recurrent shoulder dislocations.


In terms of treatment, the approach may vary depending on the severity of the lesion and the patient's overall shoulder stability. Non-surgical options like physical therapy may be recommended to strengthen the surrounding muscles and improve shoulder mechanics. In more severe cases, surgical options such as arthroscopy may be considered to repair the defect and address any associated shoulder instability.

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