Radial head fracture

Background

• Most common fractures of the elbow
• Caused by FOOSH leading to radial head being driven into the capitellum
• Associated injuries are common:
  • Capitellum, olecranon, and coronoid fx, MCL injury, dislocation

Clinical Features

• Pain in the lateral elbow, esp w/ pronation/supination of forearm
• Swelling laterally and tenderness of radial head

Differential Diagnosis

Elbow Diagnoses

Radiograph-Positive

• Distal humerus fracture
• Radial head fracture
  • Essex-Lopresti fracture
• Capitellum fracture
• Olecranon fracture
• Elbow dislocation

Radiograph-Negative

• Biceps tendon rupture/dislocation
• Lateral epicondylitis
• Medial epicondylitis
• Olecranon bursitis (nonseptic)
• Pronator teres syndrome
• Septic bursitis

Pediatric

• Nursemaid's elbow
• Supracondylar fracture
• Lateral epicondyle fracture
• Medial epicondyle fracture
• Olecranon fracture
• Radial head fracture
• Salter-Harris fractures

Diagnosis

• Imaging
  • Fractures are often subtle
    • Look for abnormal fat pad
    • Look for radiocapitellar line disruption

Management

• Sling immobilization in flexion, ice, elevation
• Nondisplaced fx w/ no mobility restrictions: ortho f/u within 1wk
• Displaced fx or mobility restrictions: ortho f/u within 24hr

See Also

• Elbow diagnoses
• Elbow Fracture (Main)
• Radial head fracture (peds)