Three major students' health education questions: 1: What are the four points to judge the fracture? 2. What is the four-word treatment formula for poisonous snake bites? 3. If it happens at school.

Fracture: 1, severe pain, especially tenderness at the fracture.

2, swelling. The broken end of the fracture can stab the peripheral nerves, blood vessels, soft tissues and bone marrow cavity, resulting in local hematoma.

3. Local deformity of fracture. The shape of the injured part changes, such as limb shortening, angulation and rotation.

4, bone friction sound. The sound of broken ends rubbing against each other, but don't move the broken ends repeatedly to hear the sound of bone rubbing.

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