The Kneefix cushion contributes to better stability and reproducibility in the supine position, regardless of the target area. The wedge shape and concave leg position cause a flattening of the lumbar spine that may reduce tension in the muscular system; hence, general positioning of the patient is more accurate without the necessity of fixation. It promotes patient comfort and is ideal for use during lengthy procedures on rigid surfaces. The Kneefix is made of lightweight, closed cell foam that is easy to clean.