Proximal Anchor Constructs and Its Influence on Surgical Outcome in Growth Rod Technique; A Comparison Between Rib Hooks and Pedicle Screws

Shetty, Ajoy Prasad; Nikhil, Kadanthode Vasu; Renjith, Karukayil Ramakrishnan; Vijayanand, K S Sri; P, Rishi Mukesh Kanna; Rajasekaran, Shanmuganathan

doi:10.1016/j.jspd.2019.03.009

Cited by 8 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 6 Two or three-level sublaminar band fixation in the cervical, thoracic, and/or lumbar spine can be used as anchors with the MAGEC rod without disrupting the pedicle or facet joint and without arthrodesis, eliminating the need for pedicle screws, hooks, and/or rib anchors. 5 These other methods of fixation of MAGEC rods to the vertebrae typically require two to three levels of fixation as well. We were able to use sublaminar band fixation safely up to the C4 level, avoiding proximal junctional kyphosis, a complication that can occur with the use of pedicle screws or hook and pedicle screw constructs.…”

Section: Discussionmentioning

confidence: 99%

“… 4 Rib anchors have been suggested as an improvement, but are not completely successful. 5 Sublaminar band fixation offers “bicortical” lamina fixation without disrupting the pedicles or facet joints or concern for spinal cord injury and without the need of exposing the involved medical staff and patient to unnecessary radiation using fluoroscopic guidance. Sublaminar band fixation can also reduce the incidence of proximal junctional kyphosis that typically occurs with pedicle screws and hooks.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sublaminar Band Fixation Provides Excellent Anchors for MAGEC Rod Distraction Systems

et al. 2023

View full text Add to dashboard Cite

MAGEC rods (NuVasive) provide distraction growth in early-onset scoliosis. Pedicle screw use with MAGEC rods can lead to anchor failure. Sublaminar bands offer superior fixation points for the MAGEC system while preserving pedicles and facets, avoiding spinal cord injury, and eliminating the need for fluoroscopy. Sublaminar bands can be safely used up to cervical vertebra four (C4), substantially decreasing the risk of complications such as anchor pull-out, rod breakage, and proximal junctional kyphosis that typically occurs with pedicle screws and hooks. This case demonstrates the viable option of sublaminar band fixation as an anchor system for MAGEC rods. This is a retrospective case review of one patient with early-onset scoliosis who underwent multiple osteotomies, spinal cord decompression, and placement of MAGEC rods with sublaminar bands. The patient had successful distraction procedures conducted routinely throughout a 44-month period with no associated implant complications or neurologic sequelae during that period. The patient had achieved maximal distraction with the implanted rods and thereafter underwent removal of the MAGEC rods and replacement implantation with longer MAGEC rods. The purpose of this case review was to demonstrate the superior fixation results provided with sublaminar band fixation for MAGEC rod distraction systems.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sublaminar Band Fixation Provides Excellent Anchors for MAGEC Rod Distraction Systems

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Surgeons have various fixation options that can be broken up into either spine-based or rib-based anchor points. Biomechanical studies exist reporting on fixation strength for various proximal anchor constructs, but a large majority of the studies evaluate deformity correction percentage and complication rate which comprises mostly infections or proximal anchor failure [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Do Rib-Based Anchors Impair Chest Wall Motion in Early Onset Scoliosis (EOS)?

Tong,

Udupa,

McDonough

et al. 2024

Preprint

View full text Add to dashboard Cite

Purpose There is a concern in pediatric surgery practice that rib-based fixation may limit chest wall motion in early onset scoliosis (EOS). The purpose of this study is to address the above concern by assessing the contribution of chest wall excursion to respiration before and after surgery. Methods Quantitative dynamic magnetic resonance imaging (QdMRI) is performed on EOS patients (before and after surgery) and normal children in this retrospective study. QdMRI is purely an image-based approach and allows free breathing image acquisition. Tidal volume parameters for chest walls (CWtv) and hemi-diaphragms (Dtv) were analyzed on concave and convex sides of the spinal curve. EOS patients (1-14 years) and normal children (5-18 years) were enrolled, with an average interval of two years for dMRI acquisition before and after surgery. Results CWtv significantly increased after surgery in the global comparison including all EOS patients (p < 0.05). For main thoracic curve (MTC) EOS patients, CWtv significantly improved by 50.24% (concave side) and 35.17% (convex side) after age correction (p < 0.05) after surgery. The average ratio of Dtv to CWtv on the convex side in MTC EOS patients was not significantly different from that in normal children (p=0.78), although the concave side showed the difference to be significant. Conclusion Chest wall component tidal volumes in EOS patients measured via QdMRI did not decrease after rib-based surgery, suggesting that rib-based fixation does not impair chest wall motion in pediatric patients with EOS.

show abstract