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Conference Paper: Randomised double-blinded clinical trial to evaluate the safety and efficacy of super-elastic memory alloy spinal rod versus standard titanium spinal rod in patients with adolescent idiopathic scoliosis: five-year follow-up results

TitleRandomised double-blinded clinical trial to evaluate the safety and efficacy of super-elastic memory alloy spinal rod versus standard titanium spinal rod in patients with adolescent idiopathic scoliosis: five-year follow-up results
Authors
Issue Date2015
PublisherSICOT.
Citation
The 36th SICOT Orthopaedic World Congress, Guangzhou, China, 17-19 September 2015. How to Cite?
AbstractINTRODUCTION: The current trend in spinal instrumentation is to utilize stiffer spinal rods but are at risk of pedicle screw pull-out or neurologic problems from aggressive correction. The authors have manufactured a nickel-titanium rod (NTR) with super-elastic properties to allow gradual correction. The objective of this randomized controlled trial is to evaluate the safety and efficacy of NTR as compared to traditional rods (TRs). METHODS: Patients with adolescent idiopathic scoliosis (AIS) and Lenke 1 curves were randomized (1:1) at surgery to receive either the NTR or TR. Anteroposterior and lateral standing radiographs were obtained preoperative, postoperative day 1 and 7, week 4, 12 and 24, year 1, 2 and 5. Parameters assessed include primary and secondary Cobb angles, kyphosis, rib hump, truncal shift, listing, shoulder height, clavicle angle and T1 tilt. Sagittal profiles were subcategorized into Types A (<25°), B (25-35°) and C (>35°). SRS-30 scores, nickel serum levels and any adverse effects or complications were noted. RESULTS: Twenty-four patients with AIS (mean age: 15 years) were recruited with minimum 5 years follow-up. All radiographic parameters were similar between the two groups. Unlike TR, the NTR group had 33% of subjects with preoperative A profiles become B or C at 5-year follow-up. Nickel levels remained normal, there were no allergic reactions, wound complications, loss of balance, implant breakages or non-union. CONCLUSIONS: This randomized pilot trial showed that the NTR has potential to gradually correct the spinal curve over time, result in comparable correction to TR and may improve sagittal correction.
DescriptionSession - Free Papers Spine Deformities 2: abstract no. 39188
Persistent Identifierhttp://hdl.handle.net/10722/229901

 

DC FieldValueLanguage
dc.contributor.authorCheung, JPY-
dc.contributor.authorYeung, KWK-
dc.contributor.authorSamartzis, D-
dc.contributor.authorTo, MKT-
dc.contributor.authorKwan, KYH-
dc.contributor.authorLuk, KDK-
dc.contributor.authorCheung, KMC-
dc.date.accessioned2016-08-23T14:13:57Z-
dc.date.available2016-08-23T14:13:57Z-
dc.date.issued2015-
dc.identifier.citationThe 36th SICOT Orthopaedic World Congress, Guangzhou, China, 17-19 September 2015.-
dc.identifier.urihttp://hdl.handle.net/10722/229901-
dc.descriptionSession - Free Papers Spine Deformities 2: abstract no. 39188-
dc.description.abstractINTRODUCTION: The current trend in spinal instrumentation is to utilize stiffer spinal rods but are at risk of pedicle screw pull-out or neurologic problems from aggressive correction. The authors have manufactured a nickel-titanium rod (NTR) with super-elastic properties to allow gradual correction. The objective of this randomized controlled trial is to evaluate the safety and efficacy of NTR as compared to traditional rods (TRs). METHODS: Patients with adolescent idiopathic scoliosis (AIS) and Lenke 1 curves were randomized (1:1) at surgery to receive either the NTR or TR. Anteroposterior and lateral standing radiographs were obtained preoperative, postoperative day 1 and 7, week 4, 12 and 24, year 1, 2 and 5. Parameters assessed include primary and secondary Cobb angles, kyphosis, rib hump, truncal shift, listing, shoulder height, clavicle angle and T1 tilt. Sagittal profiles were subcategorized into Types A (<25°), B (25-35°) and C (>35°). SRS-30 scores, nickel serum levels and any adverse effects or complications were noted. RESULTS: Twenty-four patients with AIS (mean age: 15 years) were recruited with minimum 5 years follow-up. All radiographic parameters were similar between the two groups. Unlike TR, the NTR group had 33% of subjects with preoperative A profiles become B or C at 5-year follow-up. Nickel levels remained normal, there were no allergic reactions, wound complications, loss of balance, implant breakages or non-union. CONCLUSIONS: This randomized pilot trial showed that the NTR has potential to gradually correct the spinal curve over time, result in comparable correction to TR and may improve sagittal correction.-
dc.languageeng-
dc.publisherSICOT.-
dc.relation.ispartofSICOT Orthopaedic World Congress-
dc.relation.ispartof第三十六届世界骨科大会-
dc.titleRandomised double-blinded clinical trial to evaluate the safety and efficacy of super-elastic memory alloy spinal rod versus standard titanium spinal rod in patients with adolescent idiopathic scoliosis: five-year follow-up results-
dc.typeConference_Paper-
dc.identifier.emailCheung, JPY: cheungjp@hku.hk-
dc.identifier.emailYeung, KWK: wkkyeung@hku.hk-
dc.identifier.emailSamartzis, D: dspine@hku.hk-
dc.identifier.emailTo, MKT: mikektto@hku.hk-
dc.identifier.emailKwan, KYH: kyhkwan@hku.hk-
dc.identifier.emailLuk, KDK: hrmoldk@hku.hk-
dc.identifier.emailCheung, KMC: cheungmc@hku.hk-
dc.identifier.authorityCheung, JPY=rp01685-
dc.identifier.authorityYeung, KWK=rp00309-
dc.identifier.authoritySamartzis, D=rp01430-
dc.identifier.authorityTo, MKT=rp00302-
dc.identifier.authorityKwan, KYH=rp02014-
dc.identifier.authorityLuk, KDK=rp00333-
dc.identifier.authorityCheung, KMC=rp00387-
dc.identifier.hkuros260281-
dc.publisher.placeChina-

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