Unloading 5th wheel plate from the back of pickup bed, pushed the plate & experienced pain in (r) forearm. 1st aid implemented, closed 8/15/24. Reopened (8/16) case & seen at medical facility. Referred to Orthopedic spc. 8/19 Ortho requested MRI for 8/29 & review on 9/03. 9/03 deemed EE needed surgery for rupture of the right distal bicep tendon, scheduled surgery next day 9/04/24.