The tumbler flap is a plane flap rotated over its pedicle in order to reach the recipient site. By means of such a flap suitable reconstructive material close to the defect can be utilized which otherwise could have been used only with difficulty or could not have been used at all. It is simple for the surgeon and for his patients too insofar as they never need to be kept in an uncomfortable position involving stress on the joints. Wherever the width of the flap can be made exceeding its length the procedure is, of course, especially safe. Because of its adequate thickness, the flap requires but little trimming. Redundant material can usually be returned to the donor bed.