Just for the record - my achilles injury was caused wearing a pair of supported trail shoes on terrain that was soft snow packed. The ground continually collapsed underfoot causing the ankle to twist and turn in all directions. I was not the only one to suffer an ankle injury from the terrain. (ref: Arrowhead Ultra)
Up until 2010, I used to be a heel striker and had no end of injuries. At that time I was "wearing out my legs". Until end of 2009, I was constantly suffering from "runner's knee", and people around me were telling me I should give up running when I'd only started long distance running in 2006 with and without a tyre. From 2006-2009, I spent time seeing the physio for shin splints, achilles pain, ITB strain and finally plantar fasciitis. Fed up of simply throwing money at my problems, that is seeing the physio and buying a different pair of "supported" shoes when injury struck, I decided to research about running techniques.
Injuries in 2010 - NONE! No pain, no niggles after 10 marathons
In 2011, Dr Romanov came into town. Another fantastically awesome person to meet.
Injuries in 2011 - NONE! Again no pain, no niggles after 11 marathons.