Posterior dynamic stabilization of the lumbar spine: pedicle based stabilization with the AccuFlex rod system.
Neurosurg Focus
; 22(1): E9, 2007 Jan 15.
Article
em En
| MEDLINE
| ID: mdl-17608343
ABSTRACT
Posterior dynamic stabilization in the lumbar spine is performed in an attempt to reduce loading across the intervertebral disc for the purpose of relieving pain and limiting degeneration while preserving motion. The AccuFlex rod system (Globus Medical, Inc.), a first-generation device, achieves this by changing the properties of the rod within the Protex pedicle screw-based rigid rod system. Helical cuts that have been created in the standard 6.5-mm rod allow for a limited range of motion while providing a posterior tension band that relieves a significant amount of disc loading. The AccuFlex rod system has been approved by the Food and Drug Administration for single-level fusion when used in conjunction with an interbody graft. In a study involving 170 patients who underwent fusion surgery for back pain, the 54 who received the AccuFlex construct had statistically similar fusion rates and outcomes (as assessed by visual analog scale and Short Form-16 scores) when compared with 116 patients treated with rigid rod fixation after 1 year of follow up. Future clinical studies will examine and provide information regarding the impact of AccuFlex on the incidence of adjacent-level disease. Information gained through the clinical experience with AccuFlex will serve as a foundation for the development of a stand-alone dynamic construct.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sacro
/
Fusão Vertebral
/
Fixadores Internos
/
Dor nas Costas
/
Vértebras Lombares
Limite:
Humans
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article