Zheng-wei Tian

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OBJECTIVE To determine the effect of the posterior condylar offset (PCO) on intra- and post-operative knee flexion after total knee arthroplasty (TKA) using a high-flex posterior-stabilized (PS) fixed-bearing prosthesis and to discuss it's importance in femoral prosthesis design. METHODS The clinical and radiographic materials of 100 consecutive patients(More)
The wear of rod string and tubing in pump well is a common phenomenon, and the main cause is the longitudinal vibration of sucker rod. Considering the structural characteristics and load characteristics, the contact state of rod and tube is studied and calculated using the finite element method, based on vibration theory and nonlinear contact theory. The(More)
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