DISTAL HUMERUS

Hand supinated

AP projection (partial flexion) patient position

Elbow joint

AP projection (partial flexion) reference point

Perpendicular

AP projection (partial flexion) central ray

Distal humerus

AP projection (partial flexion) structure shown

Elbow (acutely) flexed

Jones method AP projection in acute flexion patient position

humerus, 2 inches superior to olecranon process

Jones method AP projection in acute flexion reference point

Perpendicular

Jones method AP projection in acute flexion central ray

Medial and lateral epicondyles; trochlea; capitulum; olecranon process

Jones method AP projection in acute flexion structure shown

Humerus 75 degrees; arm 10-15 degrees

PA axial projection patient position

Ulnar sulcus entering medial to olecranon process

PA axial projection reference point

Perpendicular

PA axial projection central ray

Epicondyles; trochlea; ulnar sulcus and olecranon fossa

PA axial projection structure shown

Arm 45-50 degrees

PA axial projection (olecranon process) patient position

Olecranon process towards the wrist

PA axial projection (olecranon process) reference point

Perpendicular; 20 degrees

PA axial projection (olecranon process) central ray

Olecranon process and the articular margin of the olecranon and humerus

PA axial projection (olecranon process) structure shown

Jones method

AP PROJECTION (ACUTE FLEXION) This projection is sometimes known as the

PA AXIAL PROJECTION

Alternative of elbow medial 4 lateral rotation

Bursae

Synovial fluid

Bursitis

Inflammation of bursa

Perpendicular to olecranon process

Used to demonstrate posterior portion of olecranon process