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Vertical Gravity Line. Lateral X-Ray Marking . 22 Ant. DOTS. Anterior and Posterior Sacral Base. Anterior and Posterior Inferior Endplates L5-L1. Anterior and Posterior Superior Endplates L5-L1. Anterior Tubercle on Anterior Arch of C1. LINES and MEASUREMENTS. 685.

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Presentation Transcript
slide1

Vertical Gravity Line

Lateral X-Ray Marking

22 Ant.

DOTS

Anterior and Posterior Sacral Base

Anterior and Posterior Inferior Endplates L5-L1

Anterior and Posterior Superior Endplates L5-L1

Anterior Tubercle on Anterior Arch of C1

LINES and MEASUREMENTS

  • 685

Vertical Gravity Line (VGL) Anterior base of Sacrum to top and bottom of film

Spinal Length Line(SLL) Red dotted

line from dot at Anterior base of Sacrum

to Anterior Tubercle of C1. Measure the

length of the SLL in millimeters and notate to the left of the line.

Draw a line from dot on Anterior Tubercle on C1 to Vertical Gravity Line (VGL). Measure this line in millimeters and notate on top of this line.

Include if Anterior or Posterior weight bearing.

-53

o

Connect Dots on Sacral Base and extend to edge

of film. Using a T-Square, measure the angle

formed by the lines and write the angle in front of

the Anterior Base of the Sacrum

slide2

Vertical Gravity Line

Lateral X-Ray Marking

22 Ant.

LINES and MEASUREMENTS

Connect the dots of the Inferior Endplates of L5

through L1 and extend to the edge of film.

Measure the angles of these lines with a T-Square

and write the angle in front of the vertebral body.

685

Connect the dots of the Superior Endplates of L5

through L1 and extend to the edge of film.

Measure the angles of these lines with a T-Square

and write the angle in front of the vertebral body.

+24

+17

+14

+10

Determine L5 disc angles by finding the

difference in the Sacral Base Angle and

Inferior Endplate of L5

Determine L1 through L4 disc angles by the

difference in the Superior Endplate Angle and

the Inferior Endplate Angle of the vertebra

above.

+5

20 >

-15

-25

-30

-44

9 >

-53

o

Mark in red with a carat, any angle greater than

7 degrees.

slide3

Vertical Gravity Line

Lateral X-Ray Marking

22 Ant.

LINES and MEASUREMENTS

Draw a horizontal from VGL, 75mm below dot

on the anterior base of the Sacrum to the anterior

aspect of the Sacrum. Measure this line in

millimeters and write the measurement on the line

685

+24

+17

+14

+10

+5

20 >

-15

-25

-30

-44

9 >

-53

o

70

slide4

Vertical Gravity Line

Lateral X-Ray Marking

22 Ant.

DOTS

LINES and MEASUREMENTS

685

+24

+17

+14

+10

+5

20 >

-15

-25

-30

-44

9 >

-53

o

70