Ortolani's test - Ortolani's test

Japanese: オルトラニのテスト - おるとらにのてすと
Ortolani's test - Ortolani's test

...However, if the dislocation is left untreated, the shape of the acetabulum and femoral head may change, and the joint capsule may adhere to the femoral head, making it difficult to reposition the femoral head within the acetabulum.
[Symptoms]
In the neonatal period, there are few externally visible findings, and predisposition to dislocation is diagnosed by placing the hip joint in abduction and flexion and applying force to the femur to dislocate or reduce it (Ortolani's test). In infants, symptoms include limited hip joint movement on the dislocated hip joint, the femoral head being palpable on the outside, a short affected limb, and asymmetrical femoral creases.

*Some of the terminology used in reference to the "Ortolani test" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…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。
[症状]
 新生児期には外から見える所見に乏しく,股関節を屈曲外転位とし,大腿骨に力を加えて脱臼または整復する操作(オルトラニのテストOrtolani’s test)で脱臼素因を診断する。乳児期には,脱臼側股関節にまたがよく開けない開排制限があり,骨頭を外側に触れ,患肢が短く,大腿のしわが非対称になるなどの症状がある。…

※「オルトラニのテスト」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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