捻挫

1. Origins, structure, and basic meaning

• Structure: 捻挫 (ねんざ) is a sprain caused by twisting and damaging a joint's supporting tissue. It appears as a diagnosis and reason for absence.
• Basic usage: A twisted ankle is diagnosed as a sprain; a fictional athlete misses a match with a minor one.

2. Common pitfalls and similar expressions

• Medical diagnosis and injury preventing play
  • 捻挫と診断された is clinical classification; 捻挫で休む gives a cause. It should not automatically be treated as a fracture.