Huang Wenhua Fan Shicai Zhu Qingan Zhao Weidong Zhong Shizhen Chen Ying Key Laboratory of Biomechanics of the First Military Medical University of Guangzhou, China Objective To compare the stability of the spine by strengthening the anterior/posterior pedicle screw in the osteoporotic spinal injury model. PMMA cement-reinforced pedicle screws can significantly enhance the stability and fatigue resistance of osteoporotic spine. Materials and Methods 6 Thoracic and lumbar spine specimens of elderly women with fresh osteoporosis (T1(rL5), normal specimens, damaged specimens, plate fixation and PMMA cement reinforcement were tested using MTS 858 material testing machine and spinal three-dimensional motion testing machine. After the pedicle screw, the state of motion in the left/right side bend, left/right rotation and flexion/rear extension were analyzed, and the stability analysis was carried out. The result is that the three screws are in the process of strengthening the upper plate. Looseness has occurred in one of the specimens. In the three-dimensional exercise test, the bilateral T12 vertebral arch cortical damage occurred, and the pre-intensity fatigue test was not performed. In the other five specimens, 19 screws were obviously loosened during the pre-reinforcing fatigue process. Among them, 14 were prolapsed, 3 had vertebral cortical destruction, only 1 screw was not loose, and the loosening rate was 96%. However, no signs of screw loosening were observed after strengthening pedicle screw; from the range of spinal motion, the angle of movement of the spinal column was strengthened. Significantly less than before strengthening, the difference was significant (<<0.001). Conclusion The experiment confirmed that strengthening the pedicle screw by bone cement can not only provide immediate spine stability, but also significantly increase the solid.
New Osteoporosis Treatment System Zhu Junjie Shanghai Fudan Zhongsheng Medical Equipment Technology Co., Ltd. faces the challenge of population aging in China and the world. Early prevention and treatment of osteoporosis is an urgent problem to improve people's quality of life. Our Shanghai Fudan Zhongsheng Medical Equipment Technology Co., Ltd. independently developed and developed a multi-site, variable-pulse electromagnetic field osteoporosis treatment system, which uses an electromagnetic field in a specific frequency region to externally stimulate the effective acupuncture points of the human body and make it compatible with the human body. Bioelectrical interactions, activation and improvement of metabolic functions, improvement of blood circulation and bone cell regeneration, improvement of bone density, improvement of bone strength, and reduction of fracture rate are current advanced medical devices for physical therapy and prevention of osteoporosis. A large number of research data at home and abroad have shown that electromagnetic fields can promote the proliferation of human cells. In particular, American scientist Bassett systematically summed up the research results of half a century. In theory, the mechanism of electromagnetic field affecting bone tissue repair behavior is proposed, that is, by changing living tissue. The electromagnetic and chemical environment promotes the growth and repair of tissues and further affirms the therapeutic effect of electromagnetic fields. Stimulated by artificial pulsed electromagnetic field, it can promote the influx of calcium ions in osteoblasts, significantly enhance osteogenesis, thereby improving bone metabolism, accelerating bone tissue growth, increasing bone mineral content and bone density, and simultaneously passing through small bone. The osteophytes are formed at the fractures of the beam, and their normal morphology and structure are restored, and the microstructure and mechanical strength of the bones are improved, thereby substantially inhibiting and reversing osteoporosis and reducing the incidence of fractures. The osteoporosis treatment system is our own product with Chinese characteristics. The main functional features are: (1) Non-contact physical therapy: no contact with the skin, generation of spatial alternating pulsed electromagnetic fields, non-contact treatment of the human body, Different from chemical therapy and other contact therapy (such as acupuncture and electrode-electron pulse therapy instrument); (2) multiple sites: especially in fractures, osteoporosis-prone sites (including lumbar vertebrae, left and right femoral neck, Hip bone, etc.) symptomatic treatment; (3) In-depth: using a polygonal folding electromagnetic band, close to the human body, its pulsed electromagnetic field energy can reach deep into the bone tissue, promote bone cell activation, improve bone metabolism and endocrine blood circulation, to improve Bone mineral density and bone quality; (4) Living meridians, and blood vessels, and sleep, according to the medical meridian theory of the motherland, the electromagnetic field acts on the corresponding acupoints, the effect is significant; (5) ― machine chair: according to the needs, a host can be equipped with 1 Up to 4 treatment chairs for hospital use; chairs can be reclined, reclining, adaptable to different patients (such as osteoporosis until severe fractures) (6) Electromagnetic field pulse frequency modulation, amplitude modulation, natural statistical changes, reduce human body adaptation, more biological activity characteristics, improve treatment effectiveness; (7) easy to use: operation is controlled by computer, using Chinese operating platform , treatment methods, procedures, all archived, data analysis automation; (8) no toxic, side effects, no pain, no stones, long-lasting no rebound, the bone density after treatment is relatively constant for a long time. Due to the application of low frequency, low pulse electromagnetic field, and the use of ultra-low safety power supply, it is absolutely safe for the surrounding environment and medical staff. As a non-invasive, non-invasive high-tech electronic treatment device, the treatment system can be widely used in hospitals at various levels for cross-combination, such as geriatrics, endocrinology, orthopedics and osteoporosis, Chinese medicine, rehabilitation , Trauma and Plastic Surgery, Sports Medicine, and Gynecology, Neurology, Nuclear Medicine, or Radiology (can be used in conjunction with bone density measurements).
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