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The effect of age on cervical sagittal alignment: normative data on 100 asymptomatic subjects.
MedLine Citation:
PMID:  23354112     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
ABSTRACT: Study Design. Retrospective studyObjective. To determine age-related changes in cervical sagittal alignment using whole spine standing radiographs in asymptomatic adultsSummary of Background Data. Modern surgical techniques have emphasized the importance of maintaining proper sagittal alignment. But there is a paucity of literature investigating age-related changes in cervical sagittal alignment.Methods. One hundred healthy unoperated adults who were free of spinal problems underwent whole spine standing radiographs. They consisted of two groups divided by age; those in their 20s and those above 60. Each group had an equal ratio of males and females. Distances from C2, as well as C7 plumb lines to the following points were measured: thoracic and lumbar apex, as well as the posterior superior corner of the S1 vertebral body. In addition, Cobb's angles for C0-C2, C2-C7, thoracic kyphotic angle, lumbar lordotic angle and T1 sagittal slope angles were measured.Results. The distance between the C2 and C7 plumb lines did not vary with age. The thoracic apex shifted caudally from T6 in the young to T7 in the old group. The most common lumbar apex was L4 for both groups. The distance from C2, as well as C7 plumb lines to the posterior superior corner of the S1 vertebral body, as well as the thoracic apex increased significantly in the old group. On the other hand, the distance from the two plumb lines to the lumbar apex decreased in the old group. Also, C2-C7 angle increased and T1 sagittal slope angle decreased in the old group compared to the young group. However, no difference was found for the other Cobb's angles between the two groups.Conclusion. The distances between the plumb lines from C2 and C7 were maintained but C2-C7 sagittal angle increased with aging.
Authors:
Moon Soo Park; Seong-Hwan Moon; Hwan-Mo Lee; Seok Woo Kim; Tae-Hwan Kim; Seung Yeop Lee; K Daniel Riew
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-24
Journal Detail:
Title:  Spine     Volume:  -     ISSN:  1528-1159     ISO Abbreviation:  Spine     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7610646     Medline TA:  Spine (Phila Pa 1976)     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
*Department of Orthopaedic Surgery, Hallym University Sacred Heart Hospital, Medical College of Hallym University, 896, Pyeongchon-dong, Dongan-gu, Anyang-si, Gyeonggi-do, 431-070, Republic of Korea †Department of Orthopedic Surgery, Yonsei University College of Medicine, 250 Seongsan-ro, Seodaemun-gu, Seoul 102-752, Republic of Korea §Department of Orthopedic Surgery, Washington University School of Medicine, Suite 11300, West Pavilion, One Barnes-Jewish Hospital Plaza, St. Louis, MO 63110, USA.
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