Final answer:
A prosthesis is a device that replaces a body part that is missing or deformed due to accidents, injuries, illnesses, or birth defects. An example of a prosthesis is an artificial joint used in joint replacement surgeries.
Step-by-step explanation:
A prosthesis is a device that replaces a body part that is missing or deformed. It can be used in cases of accidents, injuries, illnesses, or birth defects. One example of a prosthesis is an artificial joint, which is used in joint replacement surgeries for hips, knees, shoulders, elbows, and fingers.