Results the value of the lumbar spine bone density reached peak when male or female was about 30 years old, and then, went down gradually with the increase of age.

结果腰椎骨密度值不论男性和女性，均在30岁左右达峰值，以后随年龄增长，骨密度值逐渐降低。

youdao

A bone in my spine was out of alignment.

我的脊椎骨有一节脱位。

《牛津词典》

A human has a bone just after the spine ends, which helps proves that humans once had tails (possibly).

人在脊椎末端有一块骨头，这有助于证明人类(可能)曾经有过尾巴。

youdao

The bone around the spine doesn't form properly, causing part of the spinal cord to stick out of the baby's back.

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It is used instead of taking bone from the hip in spinal fusion surgeries in which extra bone is added to the spine to fuse parts of the back together, stabilizing it.

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It builds bone density by 5% to 10% in the spine and hip and cuts in half the risk of a debilitating hip fracture.

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