This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
A 20-years old male presents with anterior shoulder dislocation. This injury is usually caused as a combination of which of the following - 
Select and explain. 
A. Abduction & external rotation, B. Adduction & external rotation, C. Abduction & internal rotation, D. Adduction & internal rotation
A: Abduction & external rotation
Answer: A: Abduction & external rotation 
Explanation: Most common mechanism of injury for anterior dislocation of shoulder is fall on outstretched hand or throwing, with abduction, external rotation, and extension at shoulder.

Anterior shoulder dislocation

Indirect force (most common) →  Abduction, external rotation, extension.
Direct force (less common)    →  Blow from the posterior aspect of shoulder.