Practically leprous plantar ulcers (PU) are difficult to treat and heal under field condition. Considering the important number of patients showing a PU, the directors of national leprosy control programmes are determined, within the programmes on prevention of disabilities (POD), to treat the PU in the field. Therefore it appears to be essential to codify and simplify their treatment thus enabling it to be effective. The healing of PU being the only criteria of effectiveness of the technique. Four clinical stages were defined, each corresponding to a precise way of treatment using only essential and basic products at low cost. During the trainings about the treatment techniques and attitudes much emphasize is given on the discharge of the PU, on the trimming of the wound and on the products to use according to PU's evolutionary stage.