Employee was servicing equipment, EE started to descend the ladder. When EE got to the last rung, EE's left foot going to the ground and as EE was letting go of the rails with EE's hands and stepping down with EE's right foot...EE caught EE's boot solidly on the last step which caused EE to fall back. EE's body twisted as EE was falling, landing EE on EE's right hip and back.