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Twenty-eight patients with osteoporotic vertebral compression fractures (OVCF) were treated with single-balloon bipedicular kyphoplasty (Group A), and 40 patients were treated with double-balloon bipedicular kyphoplasty (Group B). Visual Analogue Scale (VAS) score, vertebral height, and kyphotic angle (KA) were evaluated pre-operatively, post-operatively (3(More)
BACKGROUND Numerous studies examining the relationship between CD44 expression and prognostic impact in patients with osteosarcoma have yielded inconclusive results. The aim of this meta-analysis was carried out to investigate the relationship between CD44 expression and the survival in patients with osteosarcoma. METHODS We therefore conducted a(More)
Isolated absence of the posterior arch of the atlas with or without an intact posterior tubercle is generally considered a benign anomaly. Recognition of this defect as a benign variant is important in evaluating patients with cervical spine trauma. Neurologic symptoms may result from impingement of an intact tubercle during neck motion; however, this(More)
Well-defined conjugated polymers in confined geometries are challenging to synthesize and characterize, yet they are potentially useful in a broad range of organic optoelectronic devices such as transistors, light emitting diodes, solar cells, sensors, and nanocircuits. Herein we report a systematic study of optoelectrical properties, grafting density(More)
Balloon kyphoplasty has been shown to be safe in treatment of vertebral compression fractures refractory to conservative management. However, few reports have focused on lateral wedging of cemented vertebra after kyphoplasty. A 72-year-old woman with a T12 osteoporotic compression fracture underwent kyphoplasty using polymethylmethacrylate (PMMA) via a(More)
OBJECTIVE To compare the effective of short-segment pedicle instrumentation with bone grafting and pedicle screw implanting in injured vertebra and cross segment pedicle instrumentation with bone grafting in injured vertebra for treating thoracolumbar fractures. METHODS A prospective randomized controlled study was performed in 40 patients with(More)
Buffer layers that control electrochemical reactions and physical interactions at electrode/film interfaces are key components of an organic photovoltaic cell. Here the structure and properties of layers of semi-rigid poly(3-hexylthiophene) (P3HT) chains tethered at a surface are investigated, and these functional systems are applied in an organic(More)
6,13-Bis(triisopropylsilylethynyl)pentacene (TIPS pentacene) is a promising active channel material of organic thin-film transistors (OTFTs) due to its solubility, stability, and high mobility. However, the growth of TIPS pentacene crystals is intrinsically anisotropic and thus leads to significant variation in the performance of OTFTs. In this paper, air(More)
OBJECTIVE To summarize the research progress in the treatment of fractures by far cortical locking technique. METHODS The domestic and foreign related literature about the treatment of fractures by far cortical locking technique was reviewed, summarized, and analyzed. RESULTS In order to overcome the shortcomings of high stress at the near side of the(More)