The transplantation of the posterior tibial muscle to the dorsal aspect of the foot perforating the interosseous membrane, in the presence of intact muscle function is indicated for the treatment of equinus deformity of the foot following trauma, for flaccid and even spastic paralyses as well as for recurrences of club feet. Contractures of the foot ought to be corrected beforehand. Further requirements for getting good results are the insertion of the tendon close to the middle of the dorsum of the foot in order to prevent an overcorrection, eventually physiotherapy and the use of a night splint as well as a regular follow up. The experiences with 8 feet operated on are confronted with the literature stressing certain operative detals. This procedure deserves a wider application with correct indication and evaluation of the transplants.