As there is no tendency to re-displacement and no risk of non-union, no retentive apparatus is required, but, if it adds to the patient's sense of security, a bandage or a poroplastic wristlet may be applied. In severe cases, however, anterior and posterior splints, similar to those used for fracture of both bones of the forearm, or a dorsal splint padded so as to flex the wrist to an angle of 45°, but somewhat narrower, may be employed. The hand and forearm are in any case supported in a sling. To avoid the stiffness that is liable to follow, massage and movement of the wrist and fingers should be carried out from the first, the range of movement being gradually increased until the function of the joints is perfectly restored. If splints are used, they should be discarded in a week, and the patient is then encouraged to use the wrist freely. The various special splints recommended for the treatment of Colles' fracture, such as Carr's, Gordon's, the "pistol splint," and many others, are all designed to correct the deformity as well as to control the fragments. It has already been pointed out that if reduction is complete there is no deformity to correct, and if it is not complete the deformity cannot be corrected by any form of splint. _Unreduced Colles' Fracture._--When union has been allowed to take place without the displacement having been reduced, an unsightly deformity results. In young subjects whose occupation is likely to be interfered with, and in women for æsthetic reasons, the fracture is reproduced and the displacement of the lower fragment corrected. This is conveniently done by means of Jones' wrench, which grasps the distal fragment and affords sufficient leverage to break the bone. #Chauffeur's Fracture.#--A fracture of the lower end of the radius frequently occurs from the recoil of the crank, "by back firing," in starting the engine of a motor-car. The injury may be produced either by direct violence, the handle as it recoils striking the forearm, or by indirect violence, from forcible hyper-extension of the hand while grasping the handle. The fracture may pass transversely through the lower end of the radius, as in Colles' fracture, but is more often met with two or three inches above the wrist (Fig. 46). It is treated on the same lines as Colles' fracture. [Illustration: FIG. 46.--Radiogram of Chauffeur's Fracture.]