其中辅助人工髋关节（AAHJ）即是保留股骨头手术。本例病人3年前行辅助人工髋关节手术，术后扶拐行走4月余。
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Objective To introduce the assistant artificial hip Joint (AAHJ) and its principle of design.
目的介绍辅助人工髋关节及其设计原则。
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Methods the AAHJ was implanted in the hip Joint. It is similar with the hip in the structure, and has a same moving axle center.
方法辅助人工髋关节放置在关节内，与髋关节结构相仿，同轴心活动。
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模块上移
模块下移
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