EE on ladder to foam top of Vent Line Curtain. Ladder moved & EE fell to mine floor. EE landed on feet, but left leg folded under EE upon impact. Doctor referred EE for MRI to diagnose if any damage to ACL. MRI was not available till 2/27/2025 and results not received till 3/6/2025. MRI was normal but was diagnosed with knee sprain and referred for PT.