Chiropractic Orthospinology Basic I Class

Course Objective

To introduce the doctor/student to the X-ray portion of the Grostic Procedure for adjusting the atlas subluxation complex.


The complete course agenda is shown below, including topics covered and related hours. There are 12 total hours of instruction provided during this two-day seminar.


Introduction (9:00-9:30 ½-hr)

  • Origins of Upper Cervical Chiropractic
  • History of the Orthogonal model and the Grostic Procedure

X-ray Equipment Alignment (9:30-10:30, 1-hr)

  • Importance of X-ray alignment
  • The principles of x-ray alignment
  • Use of Filters and Patient Safety

Upper Cervical Biomechanics (10:30-11:00, ½-hr)

  • S-Lines
  • Structure and Architecture
  • Normal vs. Abnormal Alignment 

 Positioning for the Grostic Series (11:00-12:30, 1½-hr)

  • Lecture—Patient placement and proper use of the headclamps and X-ray turntable chair for producing the lateral, nasium and vertex radiographs
  • Practical—performing patient placement for the lateral, nasium and vertex radiographs 

Lunch (12:30-2:00, 1½-hrs)

Radiographic Analysis (2:00-6:00, 4-hrs)

  • Review examples of properly taken lateral, nasium and vertex films
  • Analyzing the lateral cervical, nasium and vertex radiographs
  • Height Factors 
  • Research behind the reliability and validity of the Orthogonal Model


Radiographic Analysis Review and Test (8:00-9:30, 1½-hr)

  • Review of  film analysis 
  • Discussion of common errors in analysis

Upper Cervical Subluxation Biomechanics (9:30-10:30, 1-hr)

  • Opposite angle subluxation patterns
  • Kink misalignment configurations

Case Studies (10:30-12:00, 1½-hrs)

  • Upper Cervical case management 

Review / Question & Answers (12:00-12:30. ½-hr)