This video details a straightforward, uncomplicated, and reproducible technique for the management of soft-tissue limb defects without the need for microsurgery or skin grafting. The keystone flap is extremely useful for the management of soft-tissue defects. The video describes the keystone flap procedure in a step-by-step manner, underlining important surgical steps and pitfalls, using a case example of a patient with a trochanteric soft-tissue defect after revision total hip replacement.