**Core Concept**
The Hill-Sachs lesion is a posterolateral compression fracture of the humeral head that occurs due to recurrent anterior shoulder dislocation. This injury is a result of the humeral head impacting against the anterior edge of the glenoid during dislocation.

**Why the Correct Answer is Right**
During anterior shoulder dislocation, the humeral head is forced medially and posteriorly, causing a compression fracture on the posterolateral aspect of the humeral head. This is due to the humeral head impacting against the anterior edge of the glenoid, resulting in a bony defect. The Hill-Sachs lesion is typically small and can be asymptomatic, but in severe cases, it may cause persistent shoulder pain and limited mobility. The lesion is often associated with Bankart lesions, which are anterior labral tears of the glenoid.

**Why Each Wrong Option is Incorrect**
**Option A:** Banka's lesion is not a recognized term in orthopedics, and it is likely a distractor. Bankart lesions, on the other hand, are anterior labral tears of the glenoid, which are often associated with Hill-Sachs lesions.
**Option C:** Reverse Hill-Sachs lesion is a distractor, as there is no such recognized term in orthopedics. The Hill-Sachs lesion is a posterolateral compression fracture of the humeral head, and a reverse lesion would imply a different orientation or location.
**Option D:** Greater tuberosity avulsion fracture is a different type of injury that occurs at the greater tuberosity of the humerus, typically due to a fall on an outstretched hand or a direct blow to the shoulder. It is not associated with recurrent anterior shoulder dislocation.

**Clinical Pearl / High-Yield Fact**
The Hill-Sachs lesion is often associated with a "reverse" Bankart lesion, which is an anterior labral tear of the glenoid that is displaced medially. This combination of injuries is a common finding in cases of recurrent anterior shoulder dislocation.

**✓ Correct Answer: B. Hill-Sachs lesion**