2/3 EE got down from loader to 3' ladder, EE's pantleg caught on a bolt, EE lost balance, fell, and twisted knee. 2/4 EE taken for a medical eval. and cleared to return w/o restrictions. EE follow up 2/24, 3/28 still cleared to return w/o restrictions. 4/21 MRI shows possible strain/tear of right knee ACL PCL. 5/30 EE referred to PT and cleared to return with modified duty.