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
what is the most common Cause of single veebra collapse ? 
Select and explain. 
A. Trauma, B. Tuberculosis, C. Metastasis, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Veretebreal compression fractures can be caused by Osteoporosis Trauma TUBERCULOSIS METASTASIS Disease affecting bone(pathological fractures) REF : maheswari 9th ed