Active clinical trials for "Osteoporosis"

The relationship between osteoporosis drugs and kidney damage is unclear. In this study, we plan to reveal relationship between osteoporosis drugs and kidney damage.

Age-related change of femur is not well-known. The investigators investigated the longitudinal changes of femur.

There is a management gap in China. This study aims to establish a tiered management system of osteoporosis for Chinese patients. Including: Developing a national hierarchical health management network platform for middle-aged and elderly osteoporosis patients. With this platform, the data of medical records, laboratory results would be shared between medical institutions. And primary hospitals can refer the patients to the nearest medical centre for advanced auxiliary examinations and diagnosis. Establishing a muti-level hospital collaboration, doctor-patient interaction management model of osteoporosis. To explore and establish a early warning and screening pathways for osteoporosis.

In this study, we use conditional generation adversarial network to enhance the resolution of MSCT images and obtain micro-CT-like images. Based on this, we measure the bone structure indexes of micro-CT-like images and analyzed the correlation between bone structure and bio-mechanical indexes.

After vertebroplasty, many patients will suffer from 2nd fracture in the vertebral column. With analyzing of the images done right after the 1st vertebroplasty, we can define the parameters from different imaging and they can be predictors of the future fracture.

Bone density is recognized as the most important factor to measure osteoporosis, and the prevalence of osteoporosis increases with age. Risk factors for osteoporosis include age, weight, exercise, diet, smoking and alcohol consumption. What's more, osteoporosis has a strong familial aggregation, and the genetic value of bone density is between 0.6 and 0.85. Therefore, it is necessary to conduct large-scale collection of population samples of osteoporosis fractures and relevant genetic studies.

The objectives of this research grant are to determine the association of hypoxia with the severity of osteoporosis in the patients with bronchiectasis and whether the mechanism of inflammation is triggered by inflammasones, which makes it more prone to osteoporosis in patients with bronchiectasis.

This examines in-vivo microwave sensing to measure a radio- frequency signal propagating through the wrist and, based on this information, establish a correlation of measured parameters with the integral bone density. This radio- frequency device is designed to obtain an integral estimate of bone density (osteoporotic vs normal). The measurements can be done in three ways. The first method (Method 1) utilizes Received Signal Strength (RSS) of an RFID tag array at 915 megahertz located on the top of the wrist. The transmitting antenna located on the bottom of the wrist is connected to an RFID reader. In that way, the signal travels twice across the wrist: from the reader to the tag and vice versa. The second method (Method 2) is to use only one transmitting antenna, connect the transmitting antenna to a portable Network Analyzer and measure the reflection coefficient, S11, of the antenna itself. This method does not imply that the entire signal will travel back and forth through the wrist, although its significant portion will. This method is, however, broadband and allows us to measure antenna resonances, which are very sensitive to the wrist composition. The third method (Method 3) is to use both transmitting and receiving antennas, connect the antennas to a portable KeySight Network Analyzer and measure the transmission coefficient, S21, of the antenna pair. This method implies that the entire signal will travel through the wrist once. This method is also broadband and allows us to measure decay of the radio-signal in the wrist over a band of frequencies. The two last methods could be combined together.

Usually, cervical spine fractures are not considered as osteoporotic fractures. However, recent studies show that odontoid fractures are the most common fractures of the cervical spine in elderly and may occur in a context of low trauma energy. Thus, the goal of this observationnal study is : to describe the different type of odontoid fracture and to characterize bone status in elderly patient (>65 y) who underwent odontoid fracture in a context of low trauma energy. To describe short and long term outcomes

This is a prospective,observational single-center study. The osteoporotic patients requiring posterior lumbar interbody fusion(PLIF) with cages at the lowest fusion segment are prospectively enrolled and followed up. The patients undergoing PLIF with the 3D-printed porous titanium alloy cages are compared with those using PEEK cages. The hypothesis is that the use of 3D-printed porous titanium alloy cages can reduce the rate of pedicle screw loosening and increase the rate of lumbar fusion in osteoporotic patients.