Week 6 - Sacrum, Coccyx, Sacroiliac Joints

Question 1

AP Axial Sacrum

Answer 1

PP: SUPINE, MSP TO MIDGRID, NO PELVIC ROTATION

CR- 15 DEGREE CEPHALIC ANGLE ENTERING THE LEVEL OF 2IN ABOVE PUBIC SYMPHYSIS

SS- SACRUM FREE OF SUPERIMPOSTION W/ NO SACRAL CURVATURE

Question 2

Lateral Sacrum

Answer 2

PP: HAVE PT. LAY IN TRUE LAT. AND FLEX HIPS AND
KNEES TO INSURE NO ROTATION, CENTER SACRUM AND COCCYX TO MID GRID

CR- PERP. BEAM ENTERING 3.5IN POST. TO THE ELEVATED ASIS, 2” above Pub Syn.

SS- LAT. PROJECTION OF THE SACRUM

Question 3

AP Axial Coccyx

Answer 3

PATIENT POSITION-SUPINE, MSP TO MIDGRID, NO PELVIC ROTATION

CR-10 DEGREE CAUDAL ANGLE ENTERING 2IN ABOVE PUBIC SYMPHYSIS

SS- COCCYX SEEN IN ENTIRETY, NOT SUPERIMPOSED

Question 4

Lateral Coccyx

Answer 4

PATIENT POSITION- HAVE PT. LAY IN TRUE LAT. AND FLEX HIPS AND
KNEES TO INSURE NO ROTATION, CENTER SACRUM AND COCCYX TO MID GRID

CR- PERP. BEAM ENTERING 3.5IN POST. AND 2IN INFERIOR TO THE
ELEVATED ASIS

SS- LAT. PROJECTION OF THE COCCYX

Question 5

AP Axial (SI Joints)

Answer 5

PATIENT POSITION- PT. SUPINE, MSP TO MIDGRID, ENSURE NO PELVIC ROTATION

*CR- ENTERING 1.5 IN ABOVE PUBIC SYMPHYSIS @ THE MSP
-30° CEPHALIC ANGLE FOR
MALES,
-35° CEPHALIC ANGLE FOR
FEMALES

• SS- LUMBOSACRAL JOINT AND SI JOINTS FREE OF SUPERIMPOSITION

Question 6

AP OBLIQUE RPO AND LPO - SI Joint

Answer 6

PATIENT POSITION- PT. SUPINE ROTATE THE BODY 25-30 DEGREES;
FOR THIS PROJECTION YOU ARE VIEW THE ELEVATED OR UP SIDE OF
THE SI JOINT EX.(LPO- RT. SI JOINT BEING EXAMINED)

CR- PERP. BEAM ENTERING 1IN MEDIAL TO THE ELEVATED ASIS

SS- OPEN SI JOINT OF THE SIDE FARTHEST FROM THE IR; BOTH SIDES ARE DONE FOR COMPARISON

Question 7

PA Obliq RAO and LAO - SI Joint

Answer 7

PATIENT POSITION-
PT. PRONE AND HAVE THE PT. ROTATE 25-30° DEPENDING ON THE SIDE BEING EXAMINED; IN THIS V IEW THE SIDE THAT’S DOWN IS THE AREA OF INTEREST
-EX.(LAO- LT. SI JOINT BEING
SEEN)

CR- PERP. BEAM ENTERING 1IN MEDIAL TO ASIS OF THE SIDE CLOSEST TO THE FILM

SS- OPEN SI JOINT CLOSEST TO THE FILM FREE OF SUPERIMPOSITION
OF THE SACRUM AND ILIUM