Breaks leg + augs are steel

Locking his legs, Saxon pivoted and let his reflex booster implant ramp up to
full. His nerves jangled with the sudden new input, the influence of
the neuromuscular accelerator coursing through him. The guards were
crowding in and he struck out once more. The man with the cracked ribs
went back into the doors, slammed into place by the torso of the first guard.
Saxon fired a low, fast kick at the leg of the other man and was
rewarded with a pain-filled yelp. Natural bone broke easily under the turned
steel of a heavy augmentation.

- Deus Ex: Icarus Effect, Chapter 4 pg. 109