fig1

Figure 1. Classic rotation flap. The pivot point is 2.0-2.5 times the diameter of the defect. The distance from the defect’s edge to the pivot point is the radius for the rotation flap. This creates an arc of rotation that is approximately 4 times the diameter of the defect. A 30° rotation is achieved to allow for closure. Arcs of rotation greater than 30° will generally lead to a standing cone deformity (Burrow’s triangle).