+Prognosis.+ There is no tendency of this deformity to right itself, or to improve. Early and proper treatment will, if continued long enough, insure a cure in children and an improvement in adult cases; but it must be remembered that there is a decided tendency to relapse, even after operation, unless the foot is kept in an overcorrected position for a number of years. +Treatment.+ In young infants, treatment should be begun as early as two weeks after birth and should consist in frequent gentle massage and manipulations. After the part can be brought into an overcorrected position by gentle manipulation, it should be put up in a plaster cast, for a period of three weeks and this treatment should be continued until the position of the foot is corrected. The manipulations consist in grasping the dorsum of the foot gently but firmly with one hand, and holding the leg with the other. The foot is then dorsally flexed and everted. This treatment should be repeated at least three times a day and should not be rough enough to cause the infant to cry. Treatment of clubfoot in older children and adults is a much more difficult proposition and consists in the combination of two or more methods of procedure. In order to correct the extreme adduction in these cases, extreme force must sometimes be employed. This may be accomplished by bending and bearing down on the foot, with its outer border resting on the apex of a wooden wedge. The rotation of the foot is corrected by grasping the foot in one hand, and the heel in the other, and twisting with the necessary amount of force. The inversion of the sole is also corrected by the use of this wedge as a fulcrum. In this way the tendo Achillis and the plantar fascia are stretched, and the dorsal flexion is secured by laying the patient on the face with the knee bent and the front of the thigh resting on the table. The lower leg is then vertical, and by bearing down on the front of the foot with the necessary amount of force, dorsal flexion of the foot is secured, and by hooking the fingers around the os calcis, its position is improved. A modified Thomas wrench may be used in the correction of clubfoot; but this must be done with great care, as the violence practised in this method, the tearing of the ligaments and other soft parts, is often attended with great danger; osteomyelitis, tuberculosis, neuritis, and even death from fat embolism, and extensive sloughing of the soft parts are not infrequently seen after the use of this and other bone crushing instruments. The removal of a wedge of bone from the outer side of the foot and the removal of the neck of the astragalus are employed. Tenotomy and the transplantation of tendons are also often practised, when other methods of treatment fail. +Acquired Clubfoot.+ The cause of acquired clubfoot maybe infantile paralysis, joint disease, traumatism, or it may be due to affections of the brain or spinal cord.