Sternoclavicular Joints PA

• Medial ends of both clavicles.
• Manubrium of the sternum.
• Sternoclavicular joint articulations.
• Proximal ribs.
• First and second rib landmarks.

• Verify patient identity using two identifiers.
• Remove all radiopaque objects from the neck and chest.
• Position patient erect facing away from tube, anterior chest against IR.
• Ensure shoulders are relaxed and level.
• Explain the brief exposure time required for this projection.

Level of T3, midway between the sternoclavicular joints.

Perpendicular to IR at the level of T3.

kVp

65–75

mAs

6–10

SID

40" (102 cm)

Notes

No grid required for SC joints. Shows both joints symmetrically.

• Both sternoclavicular joints visualized and equidistant from the midline.
• Medial clavicular ends and sternum clearly visible.
• Articulations open and not obscured.
• Symmetry of the joint spaces evident.
• No rotation of the sternum or clavicles.
• Adequate soft tissue definition around the joints.

1. 1 Rotation of the patient moves one joint away from the midline.
2. 2 Shoulders not level causes one joint to appear higher than the other.
3. 3 Off-centered CR clips one or both joints from the field.
4. 4 Chin dropped too far causes mandibular superimposition.
5. 5 Patient slouching or leaning tilts the SC joint alignment.

• Evaluation of sternoclavicular joint dislocation or subluxation.
• Assessment of SC joint arthritis or degenerative changes.
• Detection of SC joint separation after trauma.
• Post-operative follow-up of SC joint reduction or repair.