命名：既往曾称为膝关节自发性骨坏死，但这一命名不能反映技能不全性骨折的发病机理。
Nomenclature: Spontaneous osteonecrosis of the knee (SONK) was previously used synonymously, but term is considered misnomer given underlying etiopathogenesis corresponds to insufficiency fracture.
入院后紧接着发生关节肿、胃肠道出血和肾功能不全。
After admission, joint pain, gastrointestinal tract bleeding, and renal dysfunction developed.
患婴有著薄，紧贴的皮肤，造成关节脔缩及呼吸不全。
The baby had thin, tightly adherent skin that causes arthrogryposis and respiratory insufficiency.
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