The invention relates to a method for the step-by-step correction of the position of the longitudinal axes of segments of the lower extremities in the horizontal and/or frontal and/or sagittal planes, that comprises the simultaneous dosed correction of the imbalance of forces in the muscles supporting the corresponding joints, the reduction of the pathological configurations of said segments, and the fixation of corrected segments using at least one module of a modular exoskeleton capable of individual adjustment for bringing, during each step, the position of the longitudinal axis of each segment closer to the physiologically correct position, and for permitting movements about the corrected rotation axes of the joints within a predetermined range defined by said modular exoskeleton. The proposed device for correcting pathological configurations of segments of the lower extremities comprises a modular exoskeleton, the modules of which can be used independently or in various combinations. The modular exoskeleton comprises at least one adjustable pelvis belt (1, 47), at least one means (3, 51) for holding the thigh in a given position, at least one means (4, 89) for rotating the tibia, at least one means (5, 121) for holding the tibia in a given position, at least one means (6, 130) for correcting the position of the foot and the movement range thereof at the foot-tibia joint, at least one means (7, 146) for accommodating the foot, and a set of fixation members each in the form of a cylindrical rod (8, 9, 10, 11, 37, 52, 83, 90, 124, 141, 142) capable of linear positioning movement and/or rotation and/or free linear movement.Le procédé consiste à corriger étape par étape la position des axes longitudinaux de segments des membres inférieurs dans les plans horizontal et/ou frontal et/ou sagittal par la réduction simultanée et dosée du déséquilibre de la force des muscles reliés aux articulations correspondantes, la réduction des positions pathologiques de ces segments
