Journal of Spine & NeurosurgeryISSN: 2325-9701

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Research Article, J Spine Neurosurg S Vol: 3 Issue: 0

Long Construct Pedicle Screw Reduction and Residual Forces are Decreased Using a Computer-assisted Rod Bending System

Antoine G Tohmeh1*, Robert E Isaacs2, Zachary A Dooley3 and Alexander WL Turner3
1Northwest Orthopaedic Specialists, Spokane, WA, USA
2Department of Surgery, Division of Neurosurgery, Duke University Medical Center, Durham, NC, USA
3NuVasive Inc., San Diego, CA, USA
Corresponding author : Antoine G Tohmeh
Northwest Orthopaedic Specialists, 212 East Central Avenue, Suite 140, Spokane, WA 99208, USA,
Tel: 509-465-1300
E-mail:
[email protected]
Received: July 16, 2014 Accepted: July 30, 2014 Published: August 04, 2014
Citation: Tohmeh AG, Isaacs RE, Dooley ZA, Turner AWL (2014) Long Construct Pedicle Screw Reduction and Residual Forces are Decreased Using a Computer-assisted Rod Bending System. J Spine Neurosurg S2. doi:10.4172/2325-9701.S2-002

Abstract

Long Construct Pedicle Screw Reduction and Residual Forces are Decreased Using a Computer-assisted Rod Bending System

Previous biomechanical studies have shown that reduction loads placed on pedicle screws during assembly of the construct, with a rod that does not adequately fit the screw locations, can reduce the strength of the screw-bone interfaces. In this bench top study, axial pedicle screw forces on a unilateral 7-level construct were evaluated for 2 rod bending techniques: manual and computerassisted.

Keywords: Pedicle screw; Rod bending; Computer-assisted surgery; Rod reduction; Screw pullout; Screw loosening

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