腰よう椎つい

noun, noun which may take the genitive case particle 'no'

lumbar vertebra; lumbar vertebrae

Anatomical term for the bones of the lower spine. Both singular and plural are used in English, but Japanese does not distinguish number.

• 腰よう椎ついの骨こっ折せつは高こう齢れい者しゃに多おおい。

  Fractures of the lumbar vertebrae are common in the elderly.

• MRIで腰よう椎ついを詳くわしく調しらべた。

  We examined the lumbar vertebrae in detail with an MRI.