Employee was using slide sledge to remove bogie pins from D-11 track frame. As he pushed in the sledge, he felt pain in his arm/shoulder. Initial eval. was a sprain and possible tendon tear. Employee continued to work. On 1/24/14 an MRI showed a biceps tendon tear. He continued to work until 1/31/14, when he was taken off work and scheduled for surgery on 2/19/14.