Role of Dynesys as Pedicle-Based Nonfusion Stabilization for Degenerative Disc Disorders
نویسندگان
چکیده
Posterior nonfusion pedicle-screw-based stabilization remains a controversial area of spine surgery. To date, the Dynesys system remains the most widely implanted posterior nonfusion pedicle screw system. We review the history of Dynesys and discuss clinical outcome studies and biomechanical evaluations regarding the Dynesys system. Indications for surgery and controversies are discussed. Recommendations are made regarding technical implantation.
منابع مشابه
Clinical experience with the Dynesys semirigid fixation system for the lumbar spine: surgical and patient-oriented outcome in 50 cases after an average of 2 years.
STUDY DESIGN Retrospective study on a consecutive series of patients. OBJECTIVES To examine patient-oriented outcome after Dynesys implantation. SUMMARY OF BACKGROUND DATA The dynamic neutralization system for the spine, Dynesys, is a nonfusion pedicle screw stabilization system, which was developed in an attempt to overcome the inherent disadvantages of rigid instrumentation and fusion. Al...
متن کاملDynamic stabilization in addition to decompression for lumbar spinal stenosis with degenerative spondylolisthesis.
STUDY DESIGN Prospective clinical study. OBJECTIVE To test whether elastic stabilization with the Dynesys system (Zimmer Spine, Minneapolis, MN) provides enough stability to prevent further progression of spondylolisthesis as well as instability after decompression for spinal stenosis with degenerative spondylolisthesis. SUMMARY OF BACKGROUND DATA In spinal stenosis with degenerative spondy...
متن کاملMedium-term effects of Dynesys dynamic stabilization versus posterior lumbar interbody fusion for treatment of multisegmental lumbar degenerative disease
Objective To compare the medium-term clinical and radiographic outcomes of Dynesys dynamic stabilization and posterior lumbar interbody fusion (PLIF) for treatment of multisegmental lumbar degenerative disease. Methods Fifty-seven patients with multisegmental lumbar degenerative disease underwent Dynesys stabilization (n = 26) or PLIF (n = 31) from December 2008 to February 2010. The mean follo...
متن کاملScrew loosening and Migration after Dynesys Implantation
Due to the problems associated with rigid fixation, the concept of dynamic stabilization was introduced. Dynesys is one of the pedicle screw-based dynamic stabilization systems. In spite of the dynamic nature of Dynesys, there are concerns about the rigidity of the Dynesys system. We present a case of vertebral body split fracture after Dynesys implantation in a 74-year-old woman. She had under...
متن کاملModified Muscle-Sparing Paraspinal Approach for Stabilization and Interlaminar Decompression: A Minimally Invasive Technique for Pedicle Screw-Based Posterior Nonfusion Stabilization
INTRODUCTION Though Wiltse developed the paraspinal muscle-splitting approach to the spine, the exact location of where and how to split the paraspinal musculature when performing this approach remains unclear. This type of approach may be particularly useful for posterior nonfusion stabilization as significantly less damage occurs with this approach than with a muscle-stripping approach. MET...
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عنوان ژورنال:
دوره 2012 شماره
صفحات -
تاریخ انتشار 2012