Postoperative and Intraoperative Cement Augmentation of Pedicle Screws for Spinal Fusion

OrthoMedia ◽  
2022 ◽  
2020 ◽  
Vol 143 ◽  
pp. e351-e361
Author(s):  
Yamaan S. Saadeh ◽  
Kevin N. Swong ◽  
Timothy J. Yee ◽  
Michael J. Strong ◽  
Osama N. Kashlan ◽  
...  

2022 ◽  
Vol 3 (3) ◽  

BACKGROUND Posterior atlantoaxial dislocations (i.e., complete anterior odontoid dislocation) without C1 arch fractures are a rare hyperextension injury most often found in high-velocity trauma patients. Treatment options include either closed or open reduction and optional spinal fusion to address atlantoaxial instability due to ligamentous injury. OBSERVATIONS A 60-year-old male was struck while on his bicycle by a truck and sustained an odontoid dislocation without C1 arch fracture. Imaging findings additionally delineated a high suspicion for craniocervical instability. The patient had neurological issues due to both a head injury and ischemia secondary to an injured vertebral artery. He was stabilized and transferred to our facility for definitive neurosurgical care. LESSONS The patient underwent a successful transoral digital closed reduction and posterior occipital spinal fusion via a fiducial-based transcondylar, C1 lateral mass, C2 pedicle, and C3 lateral mass construct. This unique reduction technique has not been recorded in the literature before and avoided potential complications of overdistraction and the need for odontoidectomy. Furthermore, the use of bone fiducials for navigated screw fixation at the craniocervical junction is a novel technique and recommended particularly for placement of technically demanding transcondylar screws and C2 pedicle screws where pars anatomy is potentially unfavorable.


2009 ◽  
Vol 24 (8) ◽  
pp. 613-618 ◽  
Author(s):  
Lih-Huei Chen ◽  
Ching-Lung Tai ◽  
Po-Liang Lai ◽  
De-Mei Lee ◽  
Tsung-Tin Tsai ◽  
...  

2014 ◽  
Vol 11 (3) ◽  
pp. 149-155 ◽  
Author(s):  
Teyfik Demir

Background: The use of pedicle screws is becoming increasingly popular for spinal surgery practice as the technology advances. Screw pullout due to bone quality and loading conditions is one of the most common problems observed after pedicle screw fixation. Several solutions were studied to prevent screw pullout. These can be investigated under three main categories: screw design, expandable screws and cement augmentation.Objective: This study aimed to investigate the pullout performance of cannulated screws without cement augmentation on synthetic foams.Methods: Artificial fusion process for PU is described and validated in our previous studies. For this study six newly designed cannulated pedicle screws were artificially fused to PU foam and pullout test were conducted according to ASTM F543 standard testing protocols.Results: According to the results of post-fusion pullout tests, worst performed cannulated screw design was S3H on healthy bone simulating PU foam. However, pullout strength of unilaterally three holes including (S3H) design was purchased with two times higher loads when compared to control group. Solid cored screws were purchased with 671 N where this value was 1450 N for S3H design.Conclusions: This study provided that using cannulated pedicle screws without cement augmentation for the cases with healthy bone can be a reliable alternative to classical screws. To the knowledge of the authors this is the first post-fusion study investigating cannulated pedicle screws without cement augmentation.


Author(s):  
Ferris M. Pfeiffer ◽  
Dennis L. Abernathie

The success of a spinal fusion is often judged by the amount of relative motion between vertebrae following surgery. Proper fusion is aided by fixation instrumentation as well as bone growth subsequent to surgery. In order to allow for proper fusion it is necessary for instrumentation to properly fix the vertebrae until sufficient bone growth has occurred. In many cases pedicle screws are used to provide posterior support. It is the purpose of posterior instrumentation to increase the rate of fusion [1]. However, due to deterioration in the holding capacity of the posterior instrumentation; the quality of the fixed joint can begin to degrade. If this deterioration is significant enough it requires removal or revision of the fixation instrumentation.


2016 ◽  
Vol 6 (1_suppl) ◽  
pp. s-0036-1582680-s-0036-1582680
Author(s):  
Perez Vergara Silvia ◽  
Rubio Belmar Pedro ◽  
Bas Hermida Teresa ◽  
Bas Hermida Paloma

2017 ◽  
Vol 62 (4) ◽  
pp. 421-428 ◽  
Author(s):  
Andreas Höch ◽  
Richard Schimpf ◽  
Niels Hammer ◽  
Stefan Schleifenbaum ◽  
Michael Werner ◽  
...  

AbstractCement augmentation of pedicle screws is the gold standard for the stabilization of osteoporotic fractures of the spine. In-screw cement augmentation, in which cement is injected through the cannula, is another option for fracture stabilization of fragility fractures of the sacrum. However, biomechanical superiority of this technique compared to conventional sacroiliac screw fixation has not been tested. The present study compares the stability of cement-augmented and non-cement-augmented sacroiliac screw fixation in osteoporotic sacrum fractures under cyclic loading. Eight human donor pelvises with intact ligaments and 5


2016 ◽  
Vol 36 (7) ◽  
pp. 695-700 ◽  
Author(s):  
Paul D. Sponseller ◽  
Amit Jain ◽  
Peter O. Newton ◽  
Baron S. Lonner ◽  
Suken A. Shah ◽  
...  

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