orthopedics
Examples and usage:
1. He is an expert in plastic surgery.
He is a plastic surgeon.
Plastics are often used today.
Plastics are commonly used materials nowadays.
It is the plasticity of plastic at a certain temperature that gives it the main advantages over many other materials.
It is the plasticity of plastic at a certain temperature that makes it superior to many other materials.
Plastics are widely used in many aspects: on the one hand, plates, on the other hand, machine parts.
Plastics have many uses: tableware is one of them, and machine parts are another.