Humerus Lab

What is the field size of an AP humerus?

11 x 14 or 14 x 17 LW (corner to corner).

How do you position the patient for an AP humerus?

Erect or supine; top of IR ~1.5" above shoulder to include elbow.

How is the part positioned for an AP humerus?

Arm abducted; elbow extended; hand supinated; epicondyles parallel; slight body turn to reduce OID.

What is the CR for an AP humerus?

90° to midshaft of humerus.

What structures are shown on an AP humerus?

Shoulder and elbow joints; greater tubercle in lateral profile; epicondyles in profile.

What is the field size of a lateral humerus?

11 x 14 or 14 x 17 LW (corner to corner).

How do you position the patient for a lateral humerus?

Erect or supine; top of IR ~1.5" above shoulder to include elbow.

How is the part positioned for a lateral humerus?

Arm abducted; internally rotate with back of hand on hip; elbow 90°; slight body turn to reduce OID.

What is the CR for a lateral humerus?

90° to midshaft of humerus.

What structures are shown on a lateral humerus?

Shoulder and elbow joints; lesser tubercle medial profile; epicondyles superimposed and perpendicular.

What is the field size of a transthoracic lateral humerus (Lawrence)?

11 x 14 LW.

How do you position the patient for a transthoracic lateral humerus (Lawrence)?

Erect; affected arm neutral against grid; top of IR 1.5" above affected shoulder.

How is the part positioned for a transthoracic lateral humerus (Lawrence)?

Midcoronal plane perpendicular; raise unaffected arm above head.

What is the CR for a transthoracic lateral humerus (Lawrence)?

90° to midshaft of affected (side-down) humerus.

What structures are shown on a transthoracic lateral humerus (Lawrence)?

Head and shaft in lateral profile, superimposed over lungs and bony thorax.