Obstacle to Congruous Reduction of Congenital Dislocation of the Hip

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Attempt to evaluate and to classify the degree of congruity of reduction at the time of manipulative reduction was made by arthrogram.From these arthrographic findings before and after traction, factors influencing the degree of congruity of reduction were investigated.And from the observations of intraarticular changes after reduction, pathogenesis of intraarticular interposition as a hindrance of congruity after reduction were discussed.Main factors influencing the degree of reduction are not only the structures within the joint but also tightness of the capsule and the structures around the joint.Incongruity of reduction at the time of manipulative reduction seems to have a significant influence on the formation of persistent intraarticular interposition after reduction.
西日本整形・災害外科学会の論文