Roughly 250,000 hip replacements are performed in the US each year. Under-60 patients are becoming more important as newer artificial joints prove their capacity to withstand more active lifestyles.
除了减少死亡率，新的医疗技术还可以对生活质量产生巨大影响。美国每年进行大约25万个髋部更换手术。随着更加新颖的人工关节证明有能力承受更为积极的生活方式，60岁不到的病人正在变得越发重要。