What is a general rule when applying a splint to a casualty's limb?

Applying two cravats above and below the fracture is vital for ensuring stability and immobilization of the injured limb. This approach helps restrict movement at both the site of the injury and the adjacent joints, which is crucial for preventing further harm. By securing the splint above and below the fracture, you create a more stable environment for the injured area, thereby minimizing pain and reducing the risk of additional tissue damage.

Using two cravats allows for proper distribution of pressure, improving the effectiveness of the splint and preventing the injury from worsening during transport. This technique also aids in maintaining alignment, which is important in the healing process. The application of cravats in this manner is a fundamental principle in first aid and emergency care for fractures.