congenital dislocation of the hip

dislocation /dis·lo·ca·tion/ (dis″lo-ka´shun) displacement of a part.

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complete dislocation  one completely separating the surfaces of a joint.

compound dislocation  one in which the joint communicates with the air through a wound.

congenital dislocation of the hip  developmental dysplasia of the hip.

pathologic dislocation  one due to paralysis, synovitis, infection, or other disease.

simple dislocation  one in which there is no communication with the air through a wound.

subspinous dislocation  dislocation of the head of the humerus into the space below the spine of the scapula.

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congenital dislocation of the hip (CDH),

an orthopedic defect, present at birth, in which the head of the femur does not articulate with the acetabulum as a result of an abnormal shallowness of the acetabulum. Treatment consists of maintaining continuous abduction of the thigh so that the head of the femur presses into the center of the shallow cavity, causing it to deepen. Also called congenital dysplasia of the hip, congenital subluxation of the hip. See also Frejka splint.