What type of device is most commonly used for internal fracture fixation?

Screws are a widely utilized device for internal fracture fixation due to their ability to provide strong and stable support for fractured bones. They work by holding bone fragments together to allow for proper healing alignment. The threads on the screws engage with the bone, creating a secure fixation that helps prevent movement at the fracture site, which is critical for bone healing.

This method is particularly effective for various types of fractures, especially those occurring in larger bones or in areas where strong fixation is essential. Additionally, screws can be used in conjunction with other devices, such as plates, to enhance stability further, especially in complex fractures.

While plates and wires are also integral components of internal fixation methods, screws stand out for their versatility and strength in securely anchoring bone fragments. Casts, on the other hand, are external devices primarily used for immobilization in cases of simple fractures rather than serving as a fixation method within the body.