Despite recent advances in techniques of limb equalisation, some congenital anomalies cannot be corrected and shortening at the end of growth is severe. These children then need to be braced permanently. The role of the surgeon is then limited to satisfactory adaptation of the prosthesis which must be light, cosmetic and functional. The authors described different types of bracing according to the type of anomaly, its level, its permanent state and the existence of unilateral or bilateral involvement. Indications are given for surgery to obtain satisfactory fitting of the patient to the brace. In congenital femoral aplasia were realised either bracing similar to that of above the knee amputation after knee arthrodesis, or bracing after Van Nes procedure, the foot being rotated 180 degrees to allow the motion of the braces. The authors have observed 20 such cases.