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
[{'content': 'Most common joint to undergo recurrent dislocation is ? \nSelect and explain. \nA. Shoulder joint, B. Patella, C. Knee joint, D. Hip joint', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Shoulder joint is the commonest joint to undergo dislocation.it occurs commonly in adults and rare in children. Anterior dislocation is common than posterior dislocation. Shoulder instability is term used when head of humerus is not stable within the glenoid. The instability may be uni or bidirectional. The instability can be in many directions-multi directional. A fall on out stretched hand with shoulder abducted and externally rotated is common mechanism of injury. Ref: Essential Ohopaedics, Maheswari & Mhaskar, 9th ed Page no: 89', 'role': 'assistant'}]