P9. A distraction-based bench top protocol for the evaluation of growing rod concepatients

2021 ◽  
Vol 21 (9) ◽  
pp. S144-S145
Author(s):  
David Dick ◽  
Niloufar Shekouhi ◽  
Amey Kelkar ◽  
Jeremy Rawlinson ◽  
Derek Shaw ◽  
...  
Keyword(s):  
Growing Rod

Interactions between programmable shunt valves and magnetically controlled growing rods for scoliosis

2020 ◽  
Vol 26 (6) ◽  
pp. 667-670
Author(s):  
Thomas Larrew ◽  
Mohammed Alshareef ◽  
Robert F. Murphy ◽  
Ramin Eskandari ◽  
Libby Kosnik Infinger
Keyword(s):  
Remote Control ◽  
Ex Vivo ◽  
Shunt Valve ◽  
Growing Rods ◽  
Growing Rod ◽  
Before And After ◽  
Magnetically Controlled Growing Rods ◽  
Ex Vivo Study

OBJECTIVEAlthough the advent of magnetic growing rod technology for scoliosis has provided a means to bypass multiple hardware lengthening operations, it is important to be aware that many of these same patients have a codiagnosis of hydrocephalus with magnet-sensitive programmable ventricular shunts. As the magnetic distraction of scoliosis rods has not previously been described to affect the shunt valve setting, the authors conducted an investigation to characterize the interaction between the two devices.METHODSIn this ex vivo study, the authors carried out 360 encounters between four different shunt valve types at varying distances from the magnetic external remote control (ERC) used to distract the growing rods. Valve settings were examined before and after every interaction with the remote control to determine if there was a change in the setting.RESULTSThe Medtronic Strata and Codman Hakim valves were found to have setting changes at distances of 3 and 6 inches but not at 12 inches. The Aesculap proGAV and Codman Certas valves, typically described as MRI-resistant, did not have any setting changes due to the magnetic ERC regardless of distance.CONCLUSIONSAlthough it is not necessary to check a shunt valve after every magnetic distraction of scoliosis growing rods, if there is concern that the magnetic ERC may have been within 12 inches (30 cm) of a programmable ventricular shunt valve, the valve should be checked at the bedside with a programmer or with a skull radiograph along with postdistraction scoliosis radiographs.

scholarly journals Analysis of serum levels of titanium and aluminium ions in patients with early onset scoliosis operated upon using the magnetic growing rod—a single centre study of 14 patients

2021 ◽  
Author(s):  
Mandar Deepak Borde ◽  
Sarang Sapare ◽  
Emile Schutgens ◽  
Chadi Ali ◽  
Hilali Noordeen
Keyword(s):  
Early Onset ◽  
Serum Levels ◽  
Early Onset Scoliosis ◽  
Ion Concentration ◽  
Long Term Effects ◽  
Blood Concentrations ◽  
Growing Rod ◽  
Rod System ◽  
Rod Breakage

Abstract Study design A cross-sectional retrospective Level 3 study. Objective To study the serum levels of Titanium and Aluminium ions in patients operated using the magnetically controlled growing rod (MCGR) system. Summary of background data 14 consecutive patients of early onset scoliosis with varying etiology managed with MCGR system with a minimum follow-up of 24 months were selected for the study. The group consisted of two boys (14.3%) and 12 girls (85.7%). The average age of the patients at the time of surgery was 10.4 years (5–15 years). The average period of follow-up was 43.7 months (28–79 months). After informed consent of the subjects and their caretakers, serum levels of titanium and aluminium were measured. These levels were then assessed with regards to the number of screws used, number of distractions and complications. Methods The concentration of titanium and aluminium ions in the serum was measured using high resolution inductively coupled plasma mass spectrometry. Results For the sake of ease of assessment, patients were divided into three etiology-based groups—idiopathic (n = 6), neuromuscular (n = 2) and syndromic (n = 6). The mean serum titanium level was 15.9 μg/L (5.1–28.2 μg/L) while that of aluminium was 0.1 μmol/L (0.1–0.2 μmol/L). Of the 14 patients, 2 (14.2%) patients had mechanical failure (actuator pin dysfunction), 3 (21.4%) had rod breakage requiring revision surgery and one patient (7.1%) had surgical site infection managed with appropriate antibiotics. Patients undergoing revision for rod breakage did not show any metallosis of the tissues during surgery. Conclusion Analysis of patients with scoliosis operated using the magnetic growing rod system concludes that it is accompanied by presence of titanium in the blood but whether clinically significant or not needs to be ascertained by comparison of preoperative and postoperative blood concentrations of the titanium ions in individual subjects. The aluminium ion concentration remains within normal limits. Though implant malfunction may raise the titanium levels in the blood, its clinical significance needs to be determined. The aluminium levels are not affected irrespective to the presence or absence of complications. The long-term effects of raised titanium levels in the blood also warrant further prospective studies designed for precise and deeper analyses.

Level of Experience Does Not Influence the Accuracy of Radiographic and Ultrasound Measurements of Magnetically Controlled Growing Rod Distractions

2020 ◽  
Vol 40 (5) ◽  
pp. e341-e345
Author(s):  
Brian Bye ◽  
Chelsea K. Graham ◽  
Christopher Robbins ◽  
Nicholas Wallace ◽  
Benjamin Lindsey ◽  
...  
Keyword(s):  
Growing Rod ◽  
Ultrasound Measurements ◽  
Magnetically Controlled Growing Rod ◽  
Level Of Experience

Retrieval and clinical analysis of distraction-based dual growing rod constructs for early-onset scoliosis

2017 ◽  
Vol 17 (10) ◽  
pp. 1506-1518 ◽  
Author(s):  
Genevieve Hill ◽  
Srinidhi Nagaraja ◽  
Behrooz A. Akbarnia ◽  
Jeff Pawelek ◽  
Paul Sponseller ◽  
...  
Keyword(s):  
Early Onset ◽  
Clinical Analysis ◽  
Early Onset Scoliosis ◽  
Growing Rod

scholarly journals Evaluation of changes in shoulder balance and prediction of final shoulder imbalance during growing-rod treatment for early-onset scoliosis

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Ziyang Liu ◽  
Tie Liu ◽  
Yong Hai ◽  
Lingyun Wu ◽  
Junrui Jonathan Hai ◽  
...  
Keyword(s):  
Early Onset ◽  
Demographic Data ◽  
Potential Effect ◽  
Early Onset Scoliosis ◽  
Shoulder Balance ◽  
Related Factors ◽  
Growing Rod ◽  
Shoulder Imbalance ◽  
Entire Treatment

Abstract Background Obtaining and maintaining final shoulder balance after the entire treatment course is essential for early-onset scoliosis (EOS) patients. The relatively small number of growing-rod (GR) graduates who complete final fusion has resulted in an overall paucity of research on the GR treatment of EOS and a lack of research on the shoulder balance of EOS patients during GR treatment. Methods Twenty-four consecutive patients who underwent GR treatment until final fusion were included. Radiographic shoulder balance parameters, including the radiographic shoulder height (RSH), clavicle angle (CA), and T1 tilt angle (T1T), before and after each step of the entire treatment were measured. Shoulder balance changes from GR implantation to the last follow-up after final fusion were depicted and analysed. Demographic data, surgical-related factors, and radiographic parameters were analysed to identify risk factors for final shoulder imbalance. The shoulder balance of patients at different time points was further analysed to explore the potential effect of the series of GR treatment steps on shoulder balance. Results The RSH showed substantial improvement after GR implantation (P = 0.036), during the follow-up period after final fusion (P = 0.021) and throughout the entire treatment (P = 0.011). The trend of change in the CA was similar to that of the RSH, and the T1T improved immediately after GR implantation (P = 0.037). Further analysis indicated that patients with shoulder imbalance before final fusion showed significantly improved shoulder balance after fusion (P = 0.045), and their RSH values at early postfusion and the final follow-up did not show statistically significant differences from those in the prefusion shoulder balance group (P > 0.05). Early postfusion shoulder imbalance (odds ratio (OR): 19.500; 95% confidence interval (CI) = 1.777–213.949; P = 0.015) was identified as an independent risk factor for final shoulder imbalance. Conclusions Shoulder balance could be improved by GR implantation but often changes during the multistep lengthening process, and the final result is relatively unpredictable. Final fusion could further adjust the prefusion shoulder imbalance. Focusing on the prefusion shoulder balance of GR graduates and providing patients with early shoulder balance after fusion might be necessary.

Growing Rod Fractures

Spine ◽  
2011 ◽  
Vol 36 (20) ◽  
pp. 1639-1644 ◽  
Author(s):  
Justin S. Yang ◽  
Paul D. Sponseller ◽  
George H. Thompson ◽  
Behrooz A. Akbarnia ◽  
John B. Emans ◽  
...  
Keyword(s):  
Growing Rod

New remote-controlled growing-rod spinal instrumentation possibly applicable for scoliosis in young children

1998 ◽  
Vol 3 (6) ◽  
pp. 336-340 ◽  
Author(s):  
Masashi Takaso ◽  
Hideshige Moriya ◽  
Hiroshi Kitahara ◽  
Shohei Minami ◽  
Kazuhisa Takahashi ◽  
...  
Keyword(s):  
Young Children ◽  
Spinal Instrumentation ◽  
Growing Rod

scholarly journals Unique Growing Rod Treatment with Prior Foundation Surgery for Spondylo-Epi-Metaphyseal Dysplasia with Severe Kyphoscoliosis: A Case Report

2020 ◽  
Vol 4 (3) ◽  
pp. 284-286
Author(s):  
Takafumi Chiba ◽  
Satoshi Inami ◽  
Hiroshi Moridaira ◽  
Daisaku Takeuchi ◽  
Yutaka Nohara ◽  
...  
Keyword(s):  
Case Report ◽  
Metaphyseal Dysplasia ◽  
Growing Rod

Paper #10 Traditional Growing Rod Graduates with Various Diagnoses have Similar Clinical and Radiographic Outcomes

2016 ◽  
Vol 4 (6) ◽  
pp. 450-451
Author(s):  
Jeff Pawelek ◽  
Behrooz Akbarnia ◽  
Pooria Hosseini ◽  
Pooria Salari ◽  
David Marks ◽  
...  
Keyword(s):  
Growing Rod ◽  
Radiographic Outcomes
Sign in / Sign up

Export Citation Format

Share Document