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: Surgery
Reason for the chronic recurrent subluxation or luxation: 
Select and explain. 
A. Laxity of joint capsule., B. Eroded articular eminence., C. Trauma to the joint., D. All of the above.
D: All of the above.
Answer: D: All of the above. 
Explanation: 1) Laxity of Joint capsule 
 condyle will move without Restriction.
2) Shollow | Flat | eroded Articular eminence (Height↓)
Condyle – jump – eminence
3) Trauma to the Joint
Integrity of ligament – ruptured.