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
Most common joint to undergoe recurrent dislocation ? 
Select and explain. 
A. Shoulder joint, B. Patella, C. Knee joint, D. Hip joint
A: Shoulder joint
Answer: A: Shoulder joint 
Explanation: Recurrent dislocation: In some, joints proper healing does not occur after the first dislocation. This results in weakness of the suppoing structures of the joint so that the joint dislocates repeatedly, often with tril trauma. Recurrent dislocation of the shoulder and patella are common. among shoulder anterior type of dislocation is common Ref: Maheshwari 9th ed pg 55