Surgical implants are medical devices placed inside or on the surface of the body during a surgical procedure. They are used to support or replace damaged body parts, such as bones, joints, or teeth. Common types of surgical implants include hip implants, dental implants, and pacemakers. These implants are typically made from materials like titanium, stainless steel, or polymers, which are biocompatible, meaning they can safely coexist with body tissues. The choice of implant depends on the specific medical condition and the area of the body being treated, ensuring optimal function and patient recovery.