IR size : 24*30 

SID : 1OO cm 

Crosswise \ tabletop 

Place lead sheild over pt’s lap 

Patient position :

seat pt at end of table, with elbo fully extended, if possible 

Part position:

Extend elbow, supinate hand, and align arm and forearm to long axis of portion of IR being exposed Center elbow joint to center portion of IR being exposed

Ask pt to lean laterally as necessary for true AP projection (palpate epicondyles to ensure that they are // to the IR) Support hand as needed to prevent motion

CR : CR ┴ to IR directed to midelbow joint, which is

approximately 2 cm (3/4 inch) distal to midpoint of a line b/w epicondyles

Collimation : collimate on 4 sides to area of interest 

criteria : 

Structures Shown: • Distal humerus, elbow joint space, and proximal radius and ulna are visible.

Position: • Long axis of arm should be aligned with long axis of IR.

• No rotation : 1- appearance of bilateral epicondyles seen in profile

2- radial head, neck, and tubercles separated or only slightly superimposed by ulna

3- Elbow joint space appears open with fully extended arm. 

pathology demonstrated :

Fx or dislocation of elbow (radial head and

neck)

Osteoarthritis and osteomyelitis

External oblique: best visualizes radial head andneck and capitulum of hmerus

 IR size : 24*30 

SID: 100cm

Crosswise \ tabletop 

Place lead sheild over pt’s lap 

Patient position : 

seat pt at end of table, with arm fully

extended and shoulder and elbow on same horizontalplane (lower shoulder as needed) 

Part position:

Align arm and forearm to long axis of IR being exposed

Center elbow joint to center portion of IR being exposed

Supinate hand and rotate laterally the entire arm so that the

distal humerus and the anterior surface of the elbow joint

are approximately 45o to cassette (pt must lean laterally for

sufficient lateral rotation). Palpate epicondyles to determine

approximately 45o rotation of distal humerus

 CR :CR ┴ to IR directed to midelbow joint, which is

approximately 2 cm (3/4 inch) distal to midpoint of a line

b/w epicondyles

Collimation : collimate on 4 sides to area of interest 

criteria : 

Structures Shown: • An oblique view of the distal humerus and proximal radius and ulna is visible.

Position: • Long axis of arm should be aligned with side border of IR.

Correct 45° lateral oblique should visualize the radial head, neck, and tuberosity, free of superimposition by ulna.The lateral epicondyle and capitulum should appear elongated and in profile. 

Pathology demonstrated :

Fx or dislocation of elbow (coronoid process

of ulna)

Osteoarthritis and osteomyelitis

Internal oblique: best visualizes coronoid

process of ulna and trochlea of humerus in profile 

IR size : 18*24cm 

SID: 100cm

Crosswise / tabletop

Patient position :

seat pt at end of table, with arm fully extended and shoulder and elbow on same horizontal plane 

Part position:

Align arm and forearm to long axis of IR being exposed Center elbow joint to center portion of IR being exposed , Pronate hand into a natural palm-down position and rotate arm as needed until distal humerus and the anterior surface

of the elbow are approximately 45o to cassette (palpate epicondyles to determine approximately 45o rotation of

distal humerus) 

CR : CR ┴ to IR directed to midelbow joint, which is

approximately 2 cm (3/4 inch) distal to midpoint of a line b/w epicondyles 

Collimation :collimate on 4 sides to area of interest 

criteria : 

Structures Shown: • Oblique view of the distal humerus and proximal radius and ulna is visible.

Position: • Long axis of arm should be aligned with side border of IR.A correct 45° medial oblique should visualize the coronoid process of the ulna in profile. •The medial epi-condyle and the trochlea should appear elongated and in partial profile. • The olecranon process should appear seated in the olecranon fossa and the trochlear notch partially open and decree visualized. • Radial head and neck should be superimposed and centered over the proximal ulna 

Pathology demonstrated :

Fx or dislocation of elbow

Osteoarthritis and osteomyelitis Elevated or displaced fat pads 

IR size : 18*24 

Crosswise / tabletop

SID: 100cm

Place lead sheild over pt’s lap

Patient position :

seat pt at end of table, with elbow flexed 90° 

Part position:

Align forearm to long axis of cassette Center elbow joint to center portion of IR Drop shoulder so that humerus and forearm on same horizontal plane Rotate hand and wrist into true lateral position, thumb side up Place support under hand and wrist to elevate hand and distal forearm as needed for heavy muscular forearm so that forearm is // to IR for true lateral elbow 

CR : CR ┴ to IR directed to midelbow joint (a point approximately 4 cm

(1 ½ inches) medial to easily palpated posterior surface of

olecranon process

Collimation : ccollimate on 4 sides to area of interest 

criteria :

Structures Shown: • A lateral projection of the distal humerus and proximal forearm, the olecranon process, and the soft tissues and fat pads of the elbow joint are visible.

Position:

• Long axis of the arm should be aligned with the long axis of the IR, with the elbow joint flexed 90°.

• About one-half of the radial head should be superimposed by the coronoid process, and the olecranon process should be visualized in profile.

• A true lateral view is indicated by three concentric arcs of the trochlear sulcus, double ridges of the capitu-lum and trochlea, and the trochlear notch of the ulna. In addition, superimposition of the humeral epicondyles occurs