infectional arthritis

例句：

1. 1. Shedeveloped an infection in her foot and needed to have it treated.
   她的脚感染了，需要治疗。
2. 2. He was diagnosed with a form of infectious arthritis that required antibiotics.
   他被诊断出患有一种需要抗生素的感染性关节炎。
3. 3. The patient's condition worsened after receiving the treatment for infectious arthritis.
   患者在接受感染性关节炎治疗后病情恶化。