The practice of surgery . 9.] latter are kept in close approximation by the pronator quadratus, whilethe forearm is pronated by the pronator radii teres. Considerable poweris required, by extension, to undo the locking and displacement; andthen crepitus is emitted on rotation. The hand usuallyremains in the middle state between pronation andsupination. In treatment, coaptation, by efficient ex-tension, having been accomplished, is maintained bylong splints, as in the other fractures. [PartialFracture.—It happens occasionally that oneor both of the bones of the forearm may be only par-tially br
The practice of surgery . 9.] latter are kept in close approximation by the pronator quadratus, whilethe forearm is pronated by the pronator radii teres. Considerable poweris required, by extension, to undo the locking and displacement; andthen crepitus is emitted on rotation. The hand usuallyremains in the middle state between pronation andsupination. In treatment, coaptation, by efficient ex-tension, having been accomplished, is maintained bylong splints, as in the other fractures. [PartialFracture.—It happens occasionally that oneor both of the bones of the forearm may be only par-tially broken, i. e., some of the fibres of the bone areruptured, while others are merely bent. The result isa bending of the bones; no crepitus can be felt; therestoration of the proper shape of the bone is moredifficult than in ordinary cases of complete fracture,but when this has been accomplished the deformity isless apt to recur. The treatment is the same as forthe ordinary fracture.—Ed.] Fracture of the Metacarpal [Partial fracture withbending of the Radi-us—the patient beingyoung, as indicated bythe epiphysis havingseparated. (From Fcr-gusson.)—Ed.] The Carpal bones are seldom fractured but by greatand direct force ; and then the fracture is not only com-pound, but also generally accompanied with such injuryto other parts as to call for amputation. The Meta-carpal bones, however, not unfrequently give way—simply, and remediably—by force either direct or indi-rect ; most frequently the latter, as in violent blows delivered on theknuckles. The fragments may be made to ride, by the force whichoccasioned solution of continuity; and lateral displacement may be sub-sequently caused by action of the interosseous muscles. The swelling,pain, and powerlessness of the limb, with characteristic crepitus onmanipulation, are sufficiently indicative of the nature of the is effected by extension, and is secured afterwards by splints,extending from above the
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