. The science and art of surgery, embracing minor and operative surgery. Comp. from standard allopathic authorities, and adapted to homoeopathic therapeutics, with a general history of surgery from the earliest periods to the present time .. . s. The experienceof American surgeons, especially, shows the forward dislocationto be by far the most frequent, while Velpeau, Vidal (de Cassis)Chelius, Boyer and others contend that dislocation backwards isthe most common. 1. The dislocation forwards may result from a blowreceived upon the posterior surface of the head of the radius, orfrom a fall upon
. The science and art of surgery, embracing minor and operative surgery. Comp. from standard allopathic authorities, and adapted to homoeopathic therapeutics, with a general history of surgery from the earliest periods to the present time .. . s. The experienceof American surgeons, especially, shows the forward dislocationto be by far the most frequent, while Velpeau, Vidal (de Cassis)Chelius, Boyer and others contend that dislocation backwards isthe most common. 1. The dislocation forwards may result from a blowreceived upon the posterior surface of the head of the radius, orfrom a fall upon the palm of the hand, by which the upper endof the bone is tilted forwards and thrown against the coronoidprocess of the ulna and the external condyle, at the same timerupturing more or less the annular, anterior and externallateral ligaments. It has, also, resulted from extreme pronationand from violent adduction of the forearm. Symptoms.—The forearm is slightly flexed, and in a positionmidway between pronation and supination, though in some casesit is strongly pronated, and cases have also been reported inwhich there was forced supination. The limb cannot be extendedperfectly without causing pain, while attempts to flex the forearm. DISLOCATIONS OF THE RADIO-ULNAR JOINTS. 291 at a right angle will prove fruitless in consequence of the headof the radius striking against the lower and fore part of thehumerus. The head of the radius can be distinctly felt in thebend of the elbow, rotating under the finger, while the condylesof the humerus are unusually prominent. The whole outeraspect of the forearm presents a deformity, being thrown up-wards, while a vacuity can be felt in the natural situation of thehead of the bone. Fig. 270. Treatment. —Extensionand counter-extension areto be made, bythe s u rg e o nseizing the handof the patient and making traction in the direction occupied by the limb, theforearm being semi-flexed, to relax the biceps muscle, at thesame time the hand i
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