Cifoplastía/kyphoplasty

Conceptos actuales sobre la cifoplastía percutánea para el tratamiento de las fracturas vertebrales osteoporóticas por compresión   Current concepts of percutaneous balloon kyphoplasty for the treatment of osteoporotic vertebral compression fractures: Evidence-based review. Hsieh MK, Chen LH, Chen WJ. Biomed J [serial online] 2013 [cited 2013 Aug 8];36:154-61. Abstract Vertebral compression fractures constitute a major health care problem, not only because of their high incidence but also due to both direct and indirect consequences on health-related quality of life and health care expenditures. The mainstay of management for symptomatic vertebral compression fractures is targeted medical therapy, including analgesics, bed rest, external fixation, and rehabilitation. However, anti-inflammatory drugs and certain types of analgesics can be poorly tolerated by elderly patients, and surgical fixation often fails due to the poor quality of osteoporotic bone. Balloon kyphoplasty and vertebroplasty are two minimally invasive percutaneous surgical approaches that have recently been developed for the management of symptomatic vertebral compression fractures. The purpose of this study was to perform a comprehensive review of the literature and conduct a meta-analysis to compare clinical outcomes of pain relief and function, radiographic outcomes of the restoration of anterior vertebral height and kyphotic angles, and subsequent complications associated with these two techniques. Keywords: balloon kyphoplasty, osteoporosis, vertebral compression fracture, vertebroplasty  http://www.biomedj.org/text.asp?2013/36/4/154/112544 http://www.biomedj.org/downloadpdf.asp?issn=2319-4170;year=2013;volume=36;issue=4;spage=154;epage=161;aulast=Hsieh;type=2  Propiedades químicas y físicas del cemento para la vertebroplastía       Chemical and physical properties of bone cement for vertebroplasty. Lai PL, Chen LH, Chen WJ, Chu IM. Biomed J [serial online] 2013 [cited 2013 Aug 8];36:162-7. Abstract Vertebral compression fracture is the most common complication of osteoporosis. It may result in persistent severe pain and limited mobility, and significantly impacts the quality of life. Vertebroplasty involves a percutaneous injection of bone cement into the collapsed vertebrae by fluorescent guide. The most commonly used bone cement in percutaneous vertebroplasty is based on the polymerization of methylmethacrylate monomers to polymethylmethacrylate (PMMA) polymers. However, information on the properties of bone cement is mostly published in the biomaterial sciences literature, a source with which the clinical community is generally unfamiliar. This review focuses on the chemistry of bone cement polymerization and the physical properties of PMMA. The effects of altering the portions and contents of monomer liquid and polymer powders on the setting time, polymerization temperature, and compressive strength of the cement are also discussed. This information will allow spine surgeons to manipulate bone cement characteristics for specific clinical applications and improve safety. Keywords: bone cement, compression fracture, osteoporosis, vertebroplasty http://www.biomedj.org/text.asp?2013/36/4/162/112750

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