Because the cemented prosthetic components often loosen over decades of use, total joint arthroplasty has the longest-lasting results in older, less active individuals.
胶合剂所作的假体部位，用十多年后会松动，而全关节成形术对老年和活动较少的人，却有维持最长时间的效果。
These ring tabs will be recycled into materials for making components of prosthetic limbs to benefit the disabled who are in need.
这些拉环将被循环制成利益残疾朋友的义肢。
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