A young boy fell on his outstretched hand and has presented with pain around the elbow. He has absent radial pulse on the affected hand. What is the most likely diagnosis?

The key is B. Angulated supracondyllar fracture. [Damage or occlusion of the bracheal artery is the cause of absent radial pulse. Often closed reduction results in restoration of normal anatomy and correction of occlusion of bracheal artery and establishes circulation again but in few instances open reduction is required to fix the occluded artery].