This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Shoulder and arm injuries, Subject name: Orthopaedics
A 20 yr old male presents with anterior shoulder dislocation. The injury is usually caused as a combination of which of the following ? 
Select and explain. 
A. Abduction and external rotation, B. Adduction and external rotation, C. Abduction and internal rotation, D. Adduction and internal rotation
A: Abduction and external rotation
Answer: A: Abduction and external rotation 
Explanation: Anterior shoulder dislocation Indirect force -abduction, external rotation, extebtion Direct force -blow from posterior aspect of shoulder Most common mechanism for injury of anterior dislocation of shoulder is fall on outstretched hand Refer Maheshwari 6th/e p 89