Z-plasty is a surgical technique used to improve the appearance of scars or to release tight skin. The procedure involves making two diagonal incisions that form a "Z" shape, allowing the surgeon to reposition the skin flaps. This helps to realign the scar with the natural lines of the skin, making it less noticeable. The technique is often used in reconstructive surgery and can enhance both function and aesthetics. Z-plasty can also help to relieve tension in the skin, which may improve mobility in areas affected by scarring or contractures.