Delayed perineal healing after rectal amputation is sometimes difficult to resolve. Details are given of a method of transplantation into the residual perineal cavity of one or both gracilis muscles to obtain rapid healing by granulation tissue. Preparatives for the operative are discussed together with the different stages required, particularly preparation of the transplant and its transposition to perineal cavity, and postoperative surveillance outlined. Rapid healing by scar tissue can be obtained by this simple procedure which can also be applied for treatment of vesicovaginal, rectovesical or rectovaginal fistula.