. A practical treatise on fractures and dislocations. on of the capsule torn and the capitellumprojecting through the rent; the external lateral ligament was more orless torn at its anterior border, the internal lateral ligament uninjured ;the annular ligament was always torn in front, either at its insertionby the lower sigmoid cavity, or further outward ; the oblique ligamentwas torn, doubtless in consequence of the exaggerated supination. These facts, though not numerous or entirely free from objection,indicate that the position of the dislocated head of the radius, even infull extension, i
. A practical treatise on fractures and dislocations. on of the capsule torn and the capitellumprojecting through the rent; the external lateral ligament was more orless torn at its anterior border, the internal lateral ligament uninjured ;the annular ligament was always torn in front, either at its insertionby the lower sigmoid cavity, or further outward ; the oblique ligamentwas torn, doubtless in consequence of the exaggerated supination. These facts, though not numerous or entirely free from objection,indicate that the position of the dislocated head of the radius, even infull extension, is lower than that commonly assigned to it in systematicdescriptions and shown in the plates accompanying them—that it doesnot rise above the shallow groove which marks the posterior and lowermargin of the articular surface of the capitellum. At this point theupper margin of the head would be but very little below the axis of thejoint, and consequently would have to move over only a short distancein full flexion and extension of the limb. Fig. Excessive growth in length of the radius after dislocation of its upper end in youth. A unique case of great elongation of the radius after dislocation wascommunicated to me by Dr. J. C. Larkin, of Hillsboro, Ohio, in patient, forty years old, had injured his elbow when two years youth the radius gradually lengthened until its head stood outone and a half inches behind the elbow, as shown in Fig. 408. During DISLOCATIONS OF THE RADIUS ALONE. 723 adult life there had been but little, if any, growth. The shaft laybeneath the external condyle. Flexion and extension good, rotationmuch restricted, arm useful. The patient sought relief from the con-stant chafing of the skin over the head. Dr. Larkin removed the pro-jecting bone. In recent cases the elbow is slightly flexed, the forearm pronated ;voluntary and communicated movements are painful and limited inrange, but in old cases the freedom of motion is almost compl
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfractur, bookyear1912
