Index to Chiropractic Literature
Index to Chiropractic Literature
My ICL     Sign In
Thursday, January 27, 2022
Index to Chiropractic LiteratureIndex to Chiropractic LiteratureIndex to Chiropractic Literature

For best results switch to Advanced Search.
Article Detail
Return to Search Results
ID 2461
  Title Evaluation of the assumptions used to derive an ideal normal cervical spine model
Journal J Manipulative Physiol Ther. 1997 May;20(4):246-256
Peer Review Yes
Publication Type Article

OBJECTIVES: To evaluate the accuracy of anatomical assumptions made to derive a geometrical, ideal, normal model of the upright, static, sagittal cervical spine, to make comparisons with other spinal models and to discuss the implications of a normal cervical model.

BACKGROUND: Anatomical assumptions were made based on observations to assist in the development of a computerized geometrical model of the ideal upright, static, sagittal cervical spine. These assumptions address the magnitudes of the contribution made by the vertebral bodies and intervertebral discs to the overall magnitude and geometric shape of the cervical lordosis.

STUDY DESIGN: (a) Data were collected from 400 lordotic lateral cervical radiographs and compared with the predictions of a geometric normal cervical lordotic model. Angels of intersecting tangent lines, drawn at posterior vertebral body margins, were measured at each disc space and between C2 and C7. Height-to-length ratios and an anterior weight-bearing distance were measured. (b) LITERATURE REVIEWs were obtained through Medline and Chirolars.

RESULTS: (a) Modeling: the 400 sample subjects varied from the geometric model by approximately 5%. Subgroup averages, from partitioning the C2-C7 angle into 5 degrees intervals, were less than 8% in error to model predictions. (b)

LITERATURE REVIEW: lordosis is the normal configuration for the cervical spine and many chiropractic empirical models are similar.

CONCLUSIONS: The anatomical assumptions used to derive our normal geometric model of the cervical lordosis seem to be supported by the average values and literature reviewed. Two typical geometric configurations of the cervical spine were identified as a normal circular lordotic arc of 34 degrees and an ideal normal of 42 degrees. LITERATURE REVIEWed establishes cervical lordosis as a desirable clinical outcome of care.

This abstract is reproduced with the permission of the publisher. Article only available in print.


   Text (Citation) Tagged (Export) Excel
Email To
HTML Text     Excel

To use this feature you must register a personal account in My ICL. Registration is free! In My ICL you can save your ICL searches in My Searches, and you can save search results in My Collections. Be sure to use the Held Citations feature to collect citations from an entire search session. Read more search tips.

Sign Into Existing My ICL Account    |    Register A New My ICL Account
Search Tips
  • Enclose phrases in "quotation marks".  Examples: "low back pain", "evidence-based"
  • Retrieve all forms of a word with an asterisk*, also called a wildcard or truncation.  Example: chiropract* retrieves chiropractic, chiropractor, chiropractors
  • Register an account in My ICL to save search histories (My Searches) and collections of records (My Collections)
Advanced Search Tips