What are the risks of injury when longboarding with a previous achilles tendon injury?

Reinjury: Straining the achilles tendon again is a risk. Often in skateboarding you have a single phase stance- which means the balancing/standing foot has sustained force through the ankle and foot. You may restrain it then. Make sure you stretch regularly.

See below: There is always the possibility of re injury to the achilles, fracture of a bone, sprain or strain.