Forearm, Elbow, and Humerus Positioning
Lateral Forearm
10x12 IR 40" SID Arm flexed 90 degree with hand and wrist in lateral CR perpendicular to mid-shaft
AP Forearm
10x12 IR 40" SID Arm fully extended and supinated with shoulder in same plane CR perpendicular to mid-shaft Must include proximal and distal joint
AP Humerus
14x17 Lengthwise 40" SID Arm slightly abducted and supinated CR perpendicular to mid humerus
Lateral Humerus
14x17 Lengthwise 40" SID Instruct patient to place hand on stomach CR directed to mid humerus
Transthoracic Lateral Humerus
14x17 Lengthwise 40" SID Place affected side closest to IR and bring unaffected arm above head CR perpendicular to mid humerus Done for trauma Use autotomography (decreased mAs, increased exposure time) to blur lung and vascular markings
Partial Flexion AP Elbow
8x10 IR 40" SID 2 part series Projection 1: Place humerus parallel to IR Projection 2: Place proximal forearm parallel to IR with hand supinated CR to mid joint Performed when a patient cannot fully extend their arm due to a cast
Lateral Elbow
8x10 IR 40" SID Arm flexed 90 degrees with hand and and wrist rotated into lateral CR perpendicular to mid joint
AP Elbow
8x10 IR 40" SID Elbow extended with hand supinated CR perpendicular to mid-joint
Coyle Method - Coronoid
8x10 IR 40" SID Elbow placed in lateral with hand and wrist into lateral CR directed 45 degrees distally to mid joint
Coyle method - Radial Head
8x10 IR 40" SID Elbow placed in lateral with hand and wrist into lateral CR directed 45 degrees proximally 1" inferior to mid joint
Lateral External Oblique
8x10 IR 40" SID Entire arm rotated laterally 45 degrees CR perpendicular to mid joint Best demonstrates the radial head, neck and tubercle/capitulum
Medial Internal Oblique
8x10 IR 40" SID Entire arm rotated medially 45 degrees CR perpendicular to mid-joint Best demonstrates the coronoid process and trochlea
Jones Method - Acute Flexion Elbow
8x10 IR 40" SID Humerus placed in contact with IR with elbow flexed CR perpendicular to 2" distal to olecranon
