Presentation
Unable to straighten elbow joint
- Olecranon process
- Epicondylar groove (ulnar groove)
- Medial epicondyle
- Trochlea
- Olecranon fossa
- Lateral epicondyle
- Radial head
AP distal humerus: acute flexion of elbow. CR perpendicular to humerus.
Case Discussion
Distal Humerus AP Acute flexion view.
Also known as tangential view, inferior-to-superior projection, or Jones view.
It is indicated in fractures and moderate dislocations of the elbow in acute flexion; and allows to see the olecranon, ulnar groove, trochlea, and radial head.
It is also useful for detecting intra-articular loose bodies and degenerative osteophytes in the olecranon-trochlear joint compartment.
To perform it, patient is seated alongside the radiographic table with acutely flexed elbow. (unless contraindicated). The central ray is perpendicular to the humerus, approximately 5 cm above to the olecranon process.
Evalutation Criteria: The following should be clearly shown:
- Forearm and humerus should be superimposed
- No rotation
- Olecranon process and distal humerus
- Soft tissue outside the olecranon process and bony trabecular detail
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