The posterior surface of the forearm is next to the plate, as the distinct outline of the styloid process of the ulna and the posterior border of the articular surface of the radius shows. The radius and ulna are parallel in the most natural position of supination. The normal diameter and sharp outline of the nose of the bullet show it to be next to the plate and on the posterior surface between radius and ulna. Fragments of the exposed lead core of the bullet have scraped off on the line of fracture in a manner peculiar to shrapnel wounds, but never seen in bullet wounds in which the jacket covers all of the lead core. The treatment is regularly conservative and without interference, as in this particular wound, which was aseptic. Secondary treatment may indicate correction of bone deformity. [Illustration: Plate 34.] RIFLE--PLATE 34. UPPER EXTREMITY. Gunshot Fracture of the Ulna. The ballistic conditions of the projectile causing the wound shown in this plate are substantially those of the wound shown in plate 32. The wound of entrance and exit would be practically the same in chipping off a few small fragments and causing a clean transverse fracture without any displacement. The bullet at long range has struck the wall of the medullary canal, appearance. Treatment that of a simple fracture. Results must be good. [Illustration: Plate 35.] RIFLE--PLATE 35. UPPER EXTREMITY. Gunshot Fracture of the Ulna. The course of the bullet at long range has been anteroposterior through the middle of the forearm, passing through the side of the shaft, chipping off a few small fragments and causing a long oblique fracture. The conditions were much the same as those shown in plates 28 and 29, except that the striking energy of the projectile was somewhat greater with the velocity of mid range. The treatment, without infection, is that of a simple fracture. Results will be uniformly good. [Illustration: Plate 36.] RIFLE--PLATE 36. UPPER EXTREMITY. Gunshot Fracture of the Ulna. The course of the bullet was anteroposterior through the ulna a little above the middle of the forearm, and fairly through the long axis. This is a bone effect much similar to those shown in plates 28, 29, and 31, except that this condition is due to the impact of a missile, with a still higher velocity of shorter range, imparting its energy to small fragments of bone, which added their momentum to the destructive force of the projectile. No large fragments were carried along with the missile to cause any more destruction of tissue in exit than in entrance, so that the skin wounds, under these conditions, are about the same in appearance. The treatment is conservative and expectant with immobilization. Results in such cases are uniformly good. [Illustration: Plate 37.] RIFLE--PLATE 37. UPPER EXTREMITY. Gunshot Fracture of the Ulna.