When applying a cast, which layer is typically placed first?

The first layer applied when placing a cast is typically stockinette. This layer serves several purposes: it provides a smooth surface against the skin, helps to keep the padding and the casting material in place, and acts as a barrier to protect the skin from irritation caused by the subsequent layers.

By starting with stockinette, the healthcare provider ensures that the patient’s skin is protected and that the fit of the cast will be better at the end. This initial layer is crucial in preventing discomfort or potential skin damage that could occur if the rough edges of the padding or casting material were to come into direct contact with the skin.

Following the stockinette, padding is applied to cushion the cast and protect the limb, but it's the stockinette that is the foundational layer, making it the first step in the casting process. This order of application is important for patient comfort and the effectiveness of the cast.