IS hợp cột sống thường được thực hiện để quản lý biến dạng, phục hồi ổn định, và loại trừ quá mức chuyển động cột sống ở cấp độ cụ thể. Nonunions giới hạn sự thành công lâm sàng của phản ứng tổng hợp cột sống. Ba loại kích thích điện, nào là sử dụng để quản lý nonunion trong xương dài, | Perspectives on Modern Orthopaedics Use of Electrical Bone Stimulation in Spinal Fusion Scott D. Hodges DO Jason C. Eck DO MS and S. Craig Humphreys MD Abstract Spinal fusion is commonly done to manage deformity restore stability and eliminate excessive motion at specihc spinal levels. Pseudarthrosis limits the clinical success of spinal fusion. Three types of electrical stimulation which is used to manage nonunion in long bones recently have been applied in an attempt to enhance the rate of spinal fusion. Direct current electrical stimulation is internal and thus eliminates dependence on patient compliance. Pulsed electromagnetic helds and capacitively coupled electrical stimulation are external techniques that require patient compliance but do not have the increased risk associated with implantable devices. Firm conclusions about efficacy are difficult to establish because of inconsistencies in both determining a reliable reproducible end point for fusion and in incorporating the effect of patient parameters. Most data indicate a positive effect for use of direct current stimulation but further studies are necessary to determine its appropriateness as an adjuvant to spinal fusion. J Am Acad Orthop Surg 2003 11 81-88 The rate of pseudarthrosis after spinal fusion depends on many factors including surgical approach number of levels fused type of bone graft material use of instrumentation and number of previous surgeries. Also obtaining a solid spinal fusion often is hampered by patient traits such as excessive weight smoking and use of steroids or Additionally the radiographic criteria used to assess the presence or absence of fusion vary thus affecting the consistency of reported results. The incidence of pseudarthrosis after spinal fusion may be as high as 35 but not all patients are clinically The high rate of pseudarthrosis has forced surgeons to identify factors contributing to nonunion and to seek methods to improve their ability to .
