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Physiological tremor may cause difficulties in computer aided navigation in orthopedics. The hand tremor test is provided in this paper, which showed that the tremor is about 0.5 ~ 1 mm when hand-held drilling in orthopedics. A novel robotic assistant in performing distal locking of long bone intramedullary nails is developed. And the tremor at the end of the instrument is effectively reduced. This...
To increase the accuracy and efficiency of total knee replacement (TKR) surgery, surgical robotic systems are introduced and accepted in the surgical community. However, present surgical robotic systems unfortunately occupy a significant amount of space in operating room and prohibit flexible movement between the patient's femur and robot. In this paper, a small occupancy assistant for TKR surgery...
Based on the optical tracking system, an algorithm of triangular mesh generation in real-time from 3D scattered data is presented. For the non-uniform cloud of points digitized by optical tracking localizer, this paper supplements Hoppe's algorithm of surface reconstruction and puts forward the sampling density and the neighbor value k firstly. With the marching cube visualization technique, the novel...
This paper is to highlight a concept for computer aided navigation system that uses fluoroscopic image as a basis for real-time surgical tools navigation. Unfortunately, the inherent distortion of the fluoroscopic image deteriorates the quality of surgical navigation. Combing with global and local correction methods, a novel approach for distortion correction is proposed which allows good image quality...
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