Owww - Poor Bone Density!!!
This is old age - be careful - it can sneak up on you at any time.
So, old person + slip and fall = Complex fracture through the distal left femoral metadiaphysis, displaced posterior to proximal femur, multiple free butterfly fragments*.
*Butterfly fragment - a wedge-shaped shard of bone from the shaft of one of the long bones. This injury occurs at the apex of the fracture force and is a subtype of a comminuted fracture.