An unusual lawn mower injury

The authors report a case of foot trauma produced by a piece of the lawn mower blade, which was fired projectile-wise from the machine while it was in operation. At hit the calcaneous and remained trapped in the bone. The wound healed after removal of the foreign body, wound debridement and systemic and local antibiotic prophylaxis. In the professional literature available, no report has been found on a missile injury produced by a piece of rotating lawn mower knife.