Which term refers to a device used to protect a fractured bone?

A cast is a device specifically designed to immobilize a fractured bone, allowing it to heal properly. Casts are typically made from plaster or fiberglass and are molded around the affected limb after it has been positioned in a way that aligns the bone correctly. By holding the fracture in place and keeping the area stable, a cast provides the necessary support to prevent movement that could hinder healing.

In the context of treating fractures, casts also serve several functions beyond immobilization. They help to provide compression to reduce swelling, protect the injury from external factors, and ensure that the bones are properly aligned during the healing process.

While other devices like braces, bandages, and splints can also be used for orthopedic support, they serve slightly different purposes. Braces can provide support and stability but are usually used for less severe injuries or for ongoing support after the initial healing has begun. Bandages are generally used to secure dressings or provide light compression but do not offer rigid support needed for a fracture. Splints are often used for immediate immobilization in emergency situations but are typically not designed for long-term use like casts are. Thus, the term that best captures a device specifically designed for the protection and support of a fractured bone is a cast.