How to say "fracture" in Japanese

• 折るおるJLPT N4approx.Common
  godan verb, transitive verbThe transitive sense of 'fracture': to break or snap something, often a bone, limb, or slender object such as a stick. Use it when someone or something does the breaking.
  最後さいごのわら一いち本ぽんがらくだの背骨せぼねを折おる。↗

  The last straw breaks the camel's back.
• リスCommon
  nounA marginal match for 'fracture' as a medical noun; this word is really the animal 'squirrel' and is seldom the word you want for a broken bone, so a different term is normally preferred.
• 折れるおれるJLPT N4approx.Common
  ichidan verb, intransitive verbThe intransitive sense of 'fracture': to break, snap, or be broken, covering both objects that snap and bones that fracture. Use it when the breaking happens by itself or to the subject.
  医者いしゃは彼かれの折おれた足あしをついだ。↗

  The doctor set his broken leg.
• 挫傷ざしょうCommon
  noun, suru verbDespite matching the gloss 'fracture', this word really means a sprain, wrench, or bruise — an injury to soft tissue rather than a broken bone — so it is usually not the word you want for 'fracture'.

For the action use 「折る」, for the breaking or resulting state use 「折れる」; for the medical noun 「リス」 is marginal, and 挫傷 actually means a sprain or bruise, not a fracture.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 折るおるto break
• リスfracture
• 折れるおれるto break
• 挫傷ざしょうsprain
• 破折はせつfracture (of tooth)
• 断口だんこうfracture
• 破断はだんrupture
• 破面はめんfracture surface
• 割り目わりめcrack