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Each bone was equipped with a target marker at the fovea capitis femoris. Two surgeons each inserted 20?K-wires, 10 with and 10 without assistance from the guidance system. The aim was to bring the tips of the K-wires as close as possible to the target marker. Both procedures were performed under fluoroscopic control. The new guidance system is based on 2D-C-arm images. Following the procedure http://www.selleckchem.com/products/loxo-101.html the result was determined using computed tomography. The same accuracy (P?=?0.34) was achieved with less time (P?=?0.0008) and less radiation (P?=?0.0002) with the guidance system. However, use of the guidance system did shorten the learning curve of both surgeons, leading to a reduced number of trials (P http://www.selleck.cn/products/ON-01910.html of robotic hysterectomy using the da Vinci? Single-Site http://www.selleckchem.com/products/bms-911543.html Platform in the cadaver model A data set was collected for each procedure including port placement, docking sequence, robotic arms placement and angles, robotic instrumentation, optimal ergonomics, operative time, and cadaver anthropometrical measurements. Pearson correlation coefficients were calculated to determine whether age, BMI or docking approach were correlated with docking difficulty and likelihood of successful procedure completion. Analysis of the data was performed using SPSS v19.0.0. The planned surgical procedure was successfully completed with single-port robotics in 87.5% of cases. High BMI was correlated with difficulty docking the robot, correlation coefficient 0.98. Further work is needed in the development and advancement of single-site robotic platforms, articulated instrumentation, and optics. Copyright ? 2012 John Wiley & Sons, Ltd. ""Point-pair registration is widely used to register the patient and the image space in image-guided neurosurgery. The registration accuracy at the target point is influenced by the distribution of the fiducial points, and it is not always easy to achieve a good distribution in clinical practice. We propose one original configuration and three variants of the distribution of the fiducial points, in which each fiducial point has a definite position on the head surface.