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Conference Paper: The safety and efficacy of a remotely distractible, magnetic controlled growing rod (MCGR) for the treatment of scoliosis in children: a prospective case series with minimum two year follow-up

TitleThe safety and efficacy of a remotely distractible, magnetic controlled growing rod (MCGR) for the treatment of scoliosis in children: a prospective case series with minimum two year follow-up
Authors
Issue Date2012
PublisherScoliosis Research Society - IMATS 2012.
Citation
The 19th International Meeting on Advanced Spine Techniques (IMAST), Istanbul, Turkey, 18-21 July 2012. In Final Program of the 19th IMAST, 2012, p. 62-63 How to Cite?
Abstract
SUMMARY: The growing rod has been the gold standard for the treatment of scoliosis in young children. However, such management requires multiple open surgeries under general anesthesia for rod distraction and is associated with numerous postoperative complications. To avoid such pitfalls, we utilized a magnetically-controlled growing rod (MCGR) implant. Our study found that the MCGR was safe and effective, allowing for distractions on a non-invasive out-patient basis at monthly intervals, eliminating the need for surgeries and their associated complications. Introduction: Traditionally, growing rods are the standard of treatment for young children with severe spinal deformities and significant residual growth potential. However, this requires repeated open distractions under general anesthesia and is associated with numerous post-operative complications. This report addresses the safety and efficacy of the MCGR implant for non-invasive out-patient distractions for scoliosis correction in young children. METHODS: This was a prospective, patient series of the MCGR procedure. From November 2009 to March 2011, five patients (n=3 female; n=2 male) were treated with the MCGR. In this study, we report the first three patients (2 females and 1 male) with minimum 2 years follow-up. All cases were non-invasively distracted using an external magnet on a monthly basis. Pre and post distraction radiographs were carried out to assess the Cobb’s angle, predicted versus achieved rod distraction length and spinal length. Clinical outcome assessment was performed with the pain score (Visual Analogue Scale) and the SRS-30 questionnaire. All procedural or rod related complications were recorded. RESULTS: The main correction of the Cobb’s angle was obtained in the initial surgery and was maintained. The mean monthly increase in T1-T12, T1-S1 and instrumented segment length was 1.6mm, 2.5mm and 1.2mm, respectively. Predicted versus actual length gain per distraction were similar. One case had a superficial wound infection and there was one event of loss of distraction. On last follow-up, no pain was noted and SRS-30 scores remained unchanged to baseline. CONCLUSION: The MCGR is a safe and effective procedure for the surgical treatment of scoliosis in children. The MCGR provides external distractions on an out-patient basis without the need for sedation or anesthesia, and that remote distraction allows more frequent lengthening of the rod that may more closely mimic physiologic growth.
DescriptionConcurrent Session 2B - Early Onset Scoliosis: paper no. 26
Persistent Identifierhttp://hdl.handle.net/10722/165555

 

DC FieldValueLanguage
dc.contributor.authorCheung, KMCen_US
dc.contributor.authorCheung, JPYen_US
dc.contributor.authorSamartzis, Den_US
dc.contributor.authorMak, KCen_US
dc.contributor.authorWong, YWen_US
dc.contributor.authorCheung, WYen_US
dc.contributor.authorAkbarnia, BAen_US
dc.contributor.authorLuk, KDKen_US
dc.date.accessioned2012-09-20T08:19:31Z-
dc.date.available2012-09-20T08:19:31Z-
dc.date.issued2012en_US
dc.identifier.citationThe 19th International Meeting on Advanced Spine Techniques (IMAST), Istanbul, Turkey, 18-21 July 2012. In Final Program of the 19th IMAST, 2012, p. 62-63en_US
dc.identifier.urihttp://hdl.handle.net/10722/165555-
dc.descriptionConcurrent Session 2B - Early Onset Scoliosis: paper no. 26-
dc.description.abstractSUMMARY: The growing rod has been the gold standard for the treatment of scoliosis in young children. However, such management requires multiple open surgeries under general anesthesia for rod distraction and is associated with numerous postoperative complications. To avoid such pitfalls, we utilized a magnetically-controlled growing rod (MCGR) implant. Our study found that the MCGR was safe and effective, allowing for distractions on a non-invasive out-patient basis at monthly intervals, eliminating the need for surgeries and their associated complications. Introduction: Traditionally, growing rods are the standard of treatment for young children with severe spinal deformities and significant residual growth potential. However, this requires repeated open distractions under general anesthesia and is associated with numerous post-operative complications. This report addresses the safety and efficacy of the MCGR implant for non-invasive out-patient distractions for scoliosis correction in young children. METHODS: This was a prospective, patient series of the MCGR procedure. From November 2009 to March 2011, five patients (n=3 female; n=2 male) were treated with the MCGR. In this study, we report the first three patients (2 females and 1 male) with minimum 2 years follow-up. All cases were non-invasively distracted using an external magnet on a monthly basis. Pre and post distraction radiographs were carried out to assess the Cobb’s angle, predicted versus achieved rod distraction length and spinal length. Clinical outcome assessment was performed with the pain score (Visual Analogue Scale) and the SRS-30 questionnaire. All procedural or rod related complications were recorded. RESULTS: The main correction of the Cobb’s angle was obtained in the initial surgery and was maintained. The mean monthly increase in T1-T12, T1-S1 and instrumented segment length was 1.6mm, 2.5mm and 1.2mm, respectively. Predicted versus actual length gain per distraction were similar. One case had a superficial wound infection and there was one event of loss of distraction. On last follow-up, no pain was noted and SRS-30 scores remained unchanged to baseline. CONCLUSION: The MCGR is a safe and effective procedure for the surgical treatment of scoliosis in children. The MCGR provides external distractions on an out-patient basis without the need for sedation or anesthesia, and that remote distraction allows more frequent lengthening of the rod that may more closely mimic physiologic growth.-
dc.languageengen_US
dc.publisherScoliosis Research Society - IMATS 2012.-
dc.relation.ispartofFinal Program of the 19th IMAST, 2012en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleThe safety and efficacy of a remotely distractible, magnetic controlled growing rod (MCGR) for the treatment of scoliosis in children: a prospective case series with minimum two year follow-upen_US
dc.typeConference_Paperen_US
dc.identifier.emailCheung, KMC: cheungmc@hku.hken_US
dc.identifier.emailCheung, JPY: cheungjp@hku.hken_US
dc.identifier.emailSamartzis, D: dspine@hku.hken_US
dc.identifier.emailMak, KC: kincmak@hku.hken_US
dc.identifier.emailWong, YW: yatwa@hkucc.hku.hken_US
dc.identifier.emailCheung, WY: lcheung@hkucc.hku.hken_US
dc.identifier.emailLuk, KDK: hcm21000@hku.hk-
dc.identifier.authorityCheung, KMC=rp00387en_US
dc.identifier.authorityCheung, JPY=rp01685en_US
dc.identifier.authoritySamartzis, D=rp01430en_US
dc.description.naturepostprint-
dc.identifier.hkuros210535en_US
dc.identifier.hkuros223405-
dc.identifier.spage62-
dc.identifier.epage63-
dc.publisher.placeTurkey-
dc.description.otherThe 19th International Meeting on Advanced Spine Techniques (IMAST), Istanbul, Turkey, 18-21 July 2012. In Final Program of the 19th IMAST, 2012, p. 62-63-

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