The hardest part is that it never ends. A leg injury causes the less injured side to compensate by growing stronger while the injured side atrophys to a lesser extent. The imbalance of muscle strength caused by inappropriate gait continues for the rest of your life. The stronger side eventually pulls your backbone out of...well, you will need a good chiropractor or a D.O. for the rest of your life.I didn't have to see him go through what was probably the hardest part; the recovery,
makes me suspect maybe there was a target.
And the timing makes me thing the perpetrator(s) did not want to be present to control the time of detonation and estimated the time, badly.