Emp tripped while going thru a revolving frame of an 8750 drag line injuring his right bicep muscle. Emp was taken to ER where the doctor diagnosed him with a bicep rupture. Emp did receive a full return to work and was referred by the ER doctor to a specialist on 9/15. The specialist required a MRI on 9/20. On 9/26, emp received results of MRI indicating that surgery was needed.