Modern surgery, general and operative . slocation upwardis, in reality, rupture of theligamentum patellae (seepage 718). Dislocation of the patellaoutward (Fig. 420) may bedue to muscular action or todirect force, and occurs dur-ing extension of the leg. Itoccasionally happens in aperson with knock-knee. Ifdislocation is complete thebone lies upon the external surface of the external condyle; if incomplete, the patella rests upon theanterior surface of the external condyle. The leg is extended, flexion is im-possible, and attempts at flexion produce great agony. In the patient shownin Fig. 420
Modern surgery, general and operative . slocation upwardis, in reality, rupture of theligamentum patellae (seepage 718). Dislocation of the patellaoutward (Fig. 420) may bedue to muscular action or todirect force, and occurs dur-ing extension of the leg. Itoccasionally happens in aperson with knock-knee. Ifdislocation is complete thebone lies upon the external surface of the external condyle; if incomplete, the patella rests upon theanterior surface of the external condyle. The leg is extended, flexion is im-possible, and attempts at flexion produce great agony. In the patient shownin Fig. 420 flexion became possible ui an unreduced dislocation, but not untilmonths after the accident. The knee is wider than normal. There is ahollow in front of the joint. The bone is felt in its new position. _ Dislocation of the patella inward is very rare (Fig. 421). The signs are likethose of dislocation outward, except that the patella rests upon the inner condyle. Treatment of Lateral Dislocations of the Patella.—Give ether. Raise the. Fig. 421.—Dr. Morris Booth Millers case of outward dislo-cation of the patella from direct force six months after thefall. Failed of reduction under ether anesthesia. 684 Diseases and Injuries of the Bones and Joints body upon a bed-rest and flex the thigh. Grasp the patella and depressthe margin which is farthest from the center of the joint (Pick). Themuscles may pull the bone into place. Extend the extremity and immobilizefor three weeks, and then begin passive motion. Incision may be necessaryin order to effect reduction. Dislocation of the Patella Edgewise.—The patella rotates vertically,one edge resting between the condyles. As a rule, the outer border is in theintercondyloid notch. This condition is produced by direct force when theextremity is partly flexed. Twisting and muscular action have been assignedas causes. The condition is obvious at a glance. Treatment.—Give ether. Pick recommends sudden and forcible bendingof the knee. I
Size: 1271px × 1966px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectsurgery
