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Video-assisted thoracoscopic surgery for correction of adolescent idiopatic scoliosis: comparison of 4.5 mm versus 5.5 mm rod constructs.

 Hak Sun Kim  ;  Jin Oh Park  ;  Ankur Nanda  ;  Phillip Anthony Kho  ;  Jin Young Kim  ;  Hwan Mo Lee  ;  Seong Hwan Moon  ;  Jung Won Ha  ;  Eun Kyoung Ahn  ;  Dong Eun Shin  ;  Sung Jun Kim  ;  Eun Su Moon 
 YONSEI MEDICAL JOURNAL, Vol.51(5) : 753-760, 2010 
Journal Title
Issue Date
Adolescent ; Adult ; Bone Screws* ; Female ; Humans ; Male ; Radiography ; Retrospective Studies ; Scoliosis/diagnostic imaging ; Scoliosis/surgery* ; Thoracic Surgery, Video-Assisted/methods* ; Treatment Outcome
Instrumentation ;  rod ;  scoliosis ;  thoracoscopic surgery
PURPOSE: The purpose of this study is to report the comparative results of thoracoscopic correction achieved via cantilever technique using a 4.5 mm thin rod and the poly-axial reduction screw technique using a 5.5 mm thick rod in Lenke type 1 adolescent idiopathic scoliosis (AIS). MATERIALS AND METHODS: Radiographic data, Scoliosis Research Society (SRS) patient-based outcome questionnaires, and operative records were reviewed for forty-nine patients undergoing surgical treatment of scoliosis. The study group was divided into a 4.5 mm thin rod group (n = 24) and a 5.5 mm thick rod group (n = 25). The radiographic parameters that were analyzed included coronal curve correction, the most caudal instrumented vertebra tilt angle correction, coronal balance, and thoracic kyphosis. RESULTS: The major curve was corrected from 49.8 degrees and 47.2 degrees pre-operatively to 24.5 degrees and 18.8 degrees at the final follow-up for the thin and thick rod groups, respectively (50.8% vs. 60.2% correction). There were no significant differences between the two groups in terms of kyphosis, coronal balance, or tilt angle at the time of the final follow-up. The mean number of levels fused was 6.2 in the thin rod group, compared with 5.9 levels in the thick rod group. There were no major intraoperative complications in either group. CONCLUSION: Significant correction loss was observed in the thin rod system at the final follow-up though both groups had comparable correction immediately post-operative. Therefore, the thick rod with poly axial screw system helps to maintain post-operative correction
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sungjun(김성준) ORCID logo https://orcid.org/0000-0002-7876-7901
Kim, Jin Young(김진영)
Kim, Hak Sun(김학선) ORCID logo https://orcid.org/0000-0002-8330-4688
Moon, Seong Hwan(문성환)
Moon, Eun Su(문은수)
Park, Jin Oh(박진오)
Lee, Hwan Mo(이환모) ORCID logo https://orcid.org/0000-0002-5405-3832
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