Final answer:
An open injury caused by a pointed object being pushed into the tissues can result from a sharp blow with a lot of energy. This type of injury can cause bone sectioning or amputation of a limb. In some cases, a blunt instrument with weight can cause contusions.
Step-by-step explanation:
These injuries are typically caused by a sharp blow with a lot of energy, using tools like sharp objects.
In some cases, the force of the blow is strong enough to cause a bone to be sectioned or even amputate a limb. Other injuries can result from the impact of a blunt instrument with considerable weight, but at a slower speed that fails to penetrate the bone. These objects could be stones or heavy objects that cause contusions.
An example of such an injury can be seen in the skull of an individual EU 1215, where a rectangular object penetrated and shattered the bone, likely an ax handle or a sword handle. Therefore when a pointed object is pushed into the tissues, it can cause an open injury.