5 of us did the fixed line solo jump for charity many years ago, good crack. They told us that, I think c. 5% break an ankle on landing, and sure enough 1 lady in our group made it 20% in our case.
Found the Bungee jump in the rehab car park in Sandymount a lot scarier with the ground being a lot closer, and the bouncy bed on the ground looking like a stamp from the top of the crane.