How long should a limb be elevated after applying a cast?

Elevating a limb after applying a cast is essential for reducing swelling and promoting proper healing. For the correct choice, a duration of 24 to 48 hours is recommended because this timeframe allows sufficient time for the initial inflammatory response to subside, minimizing the risk of complications such as excessive swelling or pressure on the cast.

During the first couple of days after casting, the body experiences increased blood flow to the injured area as part of the healing process, which can lead to swelling. Elevation helps to counteract this by allowing gravity to assist with venous return and lymphatic drainage, thereby reducing edema.

While the other timeframes suggest elevation for shorter periods or until the cast is fully set, they do not provide adequate time for the body to equilibrate and can thereby increase the likelihood of discomfort or complications. Elevating the limb as long as possible is a beneficial strategy, but the structured timeframe of 24 to 48 hours offers a clear guideline that aligns with typical practice for post-casting care.