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: Medicine
The most common cause of fracture in a patient with Hemophilia is 
Select and explain. 
A. Osteoporosis and Restricted Joint Movement, B. Osteonecrosis, C. Iron deposition, D. Pseudo-tumors
A: Osteoporosis and Restricted Joint Movement
Answer: A: Osteoporosis and Restricted Joint Movement 
Explanation: Answer is A (Osteoporosis and Restricted Joint Movement) The most common cause of fractures in patients with haemophilia is osteoporosis and restricted joint movements (from haemophilic ahropathj). 'Fractures may occur frequently and after tril trauma because of poor musculature, osteoporosis, limited range of motion in affected joint and haemophilic changes in the bone'.