肢体

1. Origins, structure, and basic meaning

• Structure: 肢体 (したい) is a noun for the body together with its limbs as an examined or moving whole.
• Basic usage: 患者の肢体に麻痺 locates possible paralysis in the examined body and limbs, while 踊り手の肢体が動く makes the dancer’s limbs the moving subject on stage.

2. Common pitfalls and similar expressions

• Site of a symptom and subject of movement
  • In 肢体に麻痺がないか, 肢体に is the possible site of a symptom, not the examining doctor. In 肢体が動く, the body and limbs themselves are the subject.