Old people's bones are more prone to fracture.

老人更易骨折。

《牛津词典》

The descending rock is substantially cooler than the surrounding mantle and hence is less ductile and much more liable to fracture.

下降的岩石比周围的地幔的温度低很多，因此延展性较小，更容易断裂。

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When former President Ronald Reagan fell and broke his hip at the age of 89, he joined a group of more than 350,000 elderly Americans who fracture their hips each year.

美国前总统罗纳德·里根在89岁时摔倒摔伤臀部，他加入了每年有35万多名髋部骨折的美国老年人的行列。

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When a bone is broken in more than two places or gets crushed, the name for it is a comminuted fracture.

VOA: special.2009.02.04

His research shows that those taking the medications for more than four years have a higher risk of a fracture than people taking the drugs for a short period of time.

VOA: standard.2010.03.14

The research team also found that hip fracture was 2.1 times more likely in children born to mothers taller than 1.6m (5 ft 4 in) than in children whose mothers were shorter than 1.5m (4 ft 11 in).

BBC: Poor growth raises fracture risk

As a result, smokers at age 70 are 41% more likely to suffer a hip fracture than non-smokers.

CNN: Dangers on the Home Front

Because of the risk of infection, there are potentially more problems associated with healing when a fracture is open to the skin.

FORBES: Kevin Ware's 'Gruesome' Injury