dislocation

(dis-lo-ka’shun) (L. disa part + loca’re to place]. The displacement_of any part, more especially of a bone. closed d. Same as simple d. complete d., one which completely separates the surfaces of a joint. complicated d., one which is a ociated with other important injuries. compound d., one in which the joint communicates with the external air. congenital d., one which exists from or before birth. consecutive d., one in which the luxated bone has changed its position since its first displacement. divergent & one in which the ulna and radius are dislocated separately. habitual d., one which often recurs after replacement. incomplete d., a subluxation; a slight displacement. tra-uterine d., one which occurs to the fetus in utero. d. of the lens, displacement of the crystalline lens of the eye. Monteggia’s d., dislocation of the hip-joint in which the head of the femur is near the anterosuperior spine of the ilium. Nélat on’s d., dislocation of the ankle in which the astragalus is forced up between the end of the tibia and the fibula. old d., a dislocation in which inflammatory changes have occurred. partial d. Same as incomplete d. pathologic d., one which results from paralysis, or from a local or other disease. primitive d., one in which the bones remain as originally displaced. recent d., one in which there is no complicating inflammation. simple d., one in which the joint is not penetrated by a wound. sub a strag alar d., separation of the calcaneum and the scaphoid from the astragalus. ὶ d d., displacement of the head of the femur into the thyroid foramen. traumatic d., one due to an injury or to violence.