以下为句子列表：
英文: Autograft bone-patellar tendon-bone, hamstring tendon, allograft bone-patellar tendon-bone are selected commonly by arthroscopy doctors.
中文: 自体骨－髌腱－骨，腘绳肌腱，异体骨－髌腱－骨是关节镜医生最常选用的三种移植物。
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英文: In clinic, the autograft bone-patellar tendon-bone is little used because of the donor-site complications, but the other two grafts are used more as they have less trauma and enough knee stability without donor-site complication.
中文: 因受供端并发症的影响，自体骨－髌腱－骨的应用已呈减少趋势，而后两者因不存在供端并发症，创伤更小，也足以恢复膝关节的稳定性，应用呈增多趋势。
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英文: In order to study the influence of some changes in patellar position and configuration on knee extensor mechanism in sagittal plane after total knee arthroplasty, a two-dimensional model of knee joint in sagittal plane based on crossed-four-bar linkage ti
中文: 摘要为研究全膝关节置换术后髌骨部分形位参数的变化对伸膝机构性能的影响，建立了以交叉四连杆股胫关节模型为基础的、包含髌股关节模型的矢状面膝关节模型。
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英文: The changes of thickness and tilt angle of patella are simulated by translating and rotating the patellar axis.
中文: 在伸膝力矩不变的条件下，通过改变髌骨轴线位置，模拟髌骨厚度和高度以及髌骨倾角的变化。
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英文: The forces involved in extensor mechanism: the quadriceps muscle force, tension of patellar tendon and patellofemoral joint reaction force, are computed.
中文: 结果表明，髌骨适当后倾对增强伸膝机构功能有利。
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