While replacing hydraulic line on JLG man lift, miner was reaching above EE's head into difficult to reach area felt sharp pain in shoulder. The miner took Ibuprofen & went to EE's chiropractor that night. 9/14 while lifting ordinary grease gun pain increased & manager sent Miner to ER- Diagnosed with sprained shoulder. Prescribed Muscle relaxer and rest-to return to work 9/20