Be careful where you aim: craniomaxillofacial trauma from the utility of metal hammers.

Craniomaxillofacial injuries secondary to hammers illustrated a predilection to the head. Hammer falling from a height was most likely to injure the head. Debris from hammer strikes was the most dangerous mechanism of injury and was most likely to injure the eyeball. Hence, the authors urge the use of protective gear for the head (i.e., helmet) and eyeball (i.e., glasses) when handling hammers for constructive purposes.