On 6/13/17 the EE stated that they stepped in mud while walking. When they pulled their foot from the mud, the knee began to hurt. The EE came in on 6/19/17 and stated that the knee was not getting any better and wanted to go see the Dr. The EE was taken off work on 6/19/17 pending a MRI. Results of the MRI revealed a rupture of a Baker's Cyst.