...Therefore, the way in which a baby's diaper is put on is important in preventing dislocations. A good method is to put the diaper on the baby so that the hip joints are in a flexed and abducted position, i.e., in an open position (with the legs wide apart), and not to extend and roll up the lower legs. Some dislocations are severe at birth as a partial symptom of various congenital bone dysplasias, and are called malformed dislocations. In general dislocated joints, the femoral head easily moves in and out of the acetabulum during the neonatal period. However, if left dislocated, the shape of the acetabulum and femoral head changes, and the joint capsule adheres to the femoral head, making it difficult to reset the femoral head into the acetabulum. ... *Some of the terminology explanations that mention "deformed dislocation" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…したがって乳児のおむつのあて方は脱臼予防にたいせつで,下肢を伸ばして巻き込むことのないよう,股関節を屈曲外転位すなわち開排位(また(股)を大きく開いた形)にするようにおむつをあてるのがよい方法である。脱臼のなかには,種々の先天性の骨の異形成の部分症状として出生時に高度の脱臼の発生しているものがあり,奇形性脱臼といわれるが,一般の脱臼関節では,新生児期には骨頭は容易に寛骨臼から出たり入ったりする。しかし脱臼したまま放置されると寛骨臼や大腿骨頭の形が変化し,関節包が骨頭に癒着したりして,骨頭を臼内に整復することが困難となる。… ※「奇形性脱臼」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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