Translation guide
The femur is the thigh bone. In Japanese, it is most commonly referred to as 大腿骨 (だいたいこつ), the anatomical term. In everyday conversation, people may simply say 太ももの骨 (ふともものほね), meaning 'thigh bone.'
Referring to the femur in medical, scientific, or formal contexts.
The standard anatomical term for femur. Used in medical settings, textbooks, and formal writing.
大腿骨は人体で最も長い骨です。
The femur is the longest bone in the human body.
Literally 'thigh bone.' Used in everyday conversation when the precise anatomical term is not needed.
転んで太ももの骨を折った。
I fell and broke my thigh bone.