Our clinical results suggest that PPSF can be an alternative for management of thoracolumbar AO type A3 fractures that have no neurologic deficits. With a specially designed percutaneous instrument and pedicle screw system, the procedure has been proved as relatively safe and a minimally invasive approach for the management of thoracolumbar burst fracture without neurologic deficit.

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The limitation of LiDAR (Light Detection And Ranging) sensor causes the general sparsity of produced depth measurement. However, the sparse representation of the world is insufficient for applications such as 3D reconstruction. Thus, depth completion is an important computer vision task in which a synchronized RGB image is commonly available. In this paper, we propose a deep neural network to tackle this image guided depth completion problem. By revisiting the sparsity invariant convolution and revealing how it can be used in a novel approach, we propose three mask aware operations to process, downscale, and fuse sparse features. These operations explicitly consider the observation mask of its corresponding feature map. In addition, the structure of this network follows a novel scheme in which data from image and depth domain are processed by these proposed operations independently. Our proposed model achieves state-of-the-art performance on the KITTI depth completion benchmark. Furthermore, it presents a strong robustness for bearing input sparsity under different densities and patterns.

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Based on the best available evidence, IF may be superior to PF for treating displaced midshaft clavicle fracture.

The fluoroscopically assisted percutaneous C2 transpedicular screw fixation method is a technically feasible and minimally invasive technique for hangman's fracture.

We reviewed the outcome of a retrospective case series of eight patients with atlantoaxial instability who had been treated by percutaneous anterior transarticular screw fixation and grafting under image-intensifier guidance between December 2005 and June 2008. The mean follow-up was 19 months (8 to 27). All eight patients had a solid C1-2 fusion. There were no breakages or displacement of screws. All the patients with pre-operative neck pain had immediate relief from their symptoms or considerable improvement. There were no major complications. Our preliminary clinical results suggest that percutaneous anterior transarticulation screw fixation is technically feasible, safe, useful and minimally invasive when using the appropriate instruments allied to intra-operative image intensification, and by selecting the correct puncture point, angle and depth of insertion.