Display options
Cite
Lee CK, Tan TS, Chan CYW, et al. Surgical Morphometry of C1 and C2 Vertebrae: A Three-Dimensional Computed Tomography Analysis of 180 Chinese, Indian, and Malay Patients. Asian Spine J. 2017;11(2):181-189doi: 10.4184/asj.2017.11.2.181.
Lee, C. K., Tan, T. S., Chan, C. Y. W., & Kwan, M. K. (2017). Surgical Morphometry of C1 and C2 Vertebrae: A Three-Dimensional Computed Tomography Analysis of 180 Chinese, Indian, and Malay Patients. Asian spine journal, 11(2), 181-189. https://doi.org/10.4184/asj.2017.11.2.181
Lee, Chee Kean, et al. "Surgical Morphometry of C1 and C2 Vertebrae: A Three-Dimensional Computed Tomography Analysis of 180 Chinese, Indian, and Malay Patients." Asian spine journal vol. 11,2 (2017): 181-189. doi: https://doi.org/10.4184/asj.2017.11.2.181
Lee CK, Tan TS, Chan CYW, Kwan MK. Surgical Morphometry of C1 and C2 Vertebrae: A Three-Dimensional Computed Tomography Analysis of 180 Chinese, Indian, and Malay Patients. Asian Spine J. 2017 Apr;11(2):181-189. doi: 10.4184/asj.2017.11.2.181. Epub 2017 Apr 12. PMID: 28443161; PMCID: PMC5401831.
Copy Download .nbib Format: NLM
Share it on

Asian Spine J. 2017 Apr;11(2):181-189. doi: 10.4184/asj.2017.11.2.181. Epub 2017 Apr 12.

Surgical Morphometry of C1 and C2 Vertebrae: A Three-Dimensional Computed Tomography Analysis of 180 Chinese, Indian, and Malay Patients.

Asian spine journal

Chee Kean Lee, Tiam Siong Tan, Chris Yin Wei Chan, Mun Keong Kwan

Affiliations

  1. Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.

PMID: 28443161 PMCID: PMC5401831 DOI: 10.4184/asj.2017.11.2.181

Abstract

STUDY DESIGN: Clinical imaging study.

PURPOSE: To study the surgical morphometry of C1 and C2 vertebrae in Chinese, Indian, and Malay patients.

OVERVIEW OF LITERATURE: C1 lateral mass and C2 pedicle screw fixation is gaining popularity. However, there is a lack of C1-C2 morphometric data for the Asian population.

METHODS: Computed tomography analysis of 180 subjects (60 subjects each belonging to Chinese, Indian, and Malay populations) using simulation software was performed. Length and angulations of C1 lateral mass (C1LM) and C2 pedicle (C2P) screws were assessed.

RESULTS: The predicted C1LM screw length was between 23.2 and 30.2 mm. The safe zone of trajectories was within 11.0°±7.7° laterally to 29.1°±6.2° medially in the axial plane and 37.0°±10.2° caudally to 20.9°±7.8° cephalically in the sagittal plane. The shortest and longest predicted C2P screw lengths were 22.1±2.8 mm and 28.5±3.2 mm, respectively. The safe trajectories were from 25.1° to 39.3° medially in the axial plane and 32.3° to 45.9° cephalically in the sagittal plane.

CONCLUSIONS: C1LM screw length was 23-30 mm with the axial safe zone from 11° laterally to 29° medially and sagittal safe zone at 21° cephalically. C2P screw length was 22-28 mm with axial safe zone from 26° to 40° medially and sagittal safe zone from 32° to 46° cephalically. These data serve as an important reference for Chinese, Indian, and Malay populations during C1-C2 instrumentation.

Keywords: C1–C2 Morphometry; Chinese; High-riding vertebral artery; Indian; Malay

Conflict of interest statement

Conflict of Interest: No potential conflict of interest relevant to this article was reported.

References

  1. J Spinal Disord Tech. 2009 Jun;22(4):233-9 - PubMed
  2. Neurosurgery. 2004 Jun;54(6):1436-9; discussion 1439-40 - PubMed
  3. Spine (Phila Pa 1976). 2011 Mar 15;36(6):E401-7 - PubMed
  4. Clin Anat. 2000;13(4):237-43 - PubMed
  5. Spine J. 2013 Jul;13(7):775-85 - PubMed
  6. Acta Neurochir (Wien). 1994;129(1-2):47-53 - PubMed
  7. Eur Spine J. 2010 Jan;19(1):85-90 - PubMed
  8. J Spinal Disord Tech. 2010 May;23 (3):176-9 - PubMed
  9. Spine (Phila Pa 1976). 1995 Feb 1;20(3):259-63 - PubMed
  10. Asian Spine J. 2007 Jun;1(1):27-31 - PubMed
  11. J Bone Joint Surg Am. 2005 Nov;87(11):2495-8 - PubMed
  12. J Neurosurg. 2002 Jul;97(1 Suppl):123-7 - PubMed
  13. Spine (Phila Pa 1976). 2001 Nov 15;26(22):2467-71 - PubMed
  14. J Spinal Disord Tech. 2007 Oct;20(7):499-504 - PubMed
  15. Spine (Phila Pa 1976). 2000 Jun 15;25(12 ):1542-7 - PubMed
  16. Spine (Phila Pa 1976). 2002 Jul 15;27(14 ):1494-8 - PubMed
  17. J Spinal Disord Tech. 2009 Oct;22(7):516-23 - PubMed
  18. Spine (Phila Pa 1976). 2005 Jul 1;30(13):1519-23 - PubMed
  19. Spine (Phila Pa 1976). 1992 May;17(5):480-90 - PubMed
  20. J Korean Neurosurg Soc. 2011 Oct;50(4):341-7 - PubMed
  21. Spine J. 2014 Apr;14 (4):615-8 - PubMed
  22. Spine (Phila Pa 1976). 2003 May 1;28(9):888-95 - PubMed

Publication Types