Proximal humerus fracture

Revision as of 23:05, 25 May 2016 by Snyderjonathan (talk | contribs) (Management)

Background

  • Typically occur in elderly osteoporotic patients from FOOSH mechanism
  • Must rule-out axillary and brachial plexus neurovascular injuries
    • 45% have nerve injury (axillary most common)
  • Greater tuberosity fracture suggests rotator cuff tear
  • Lesser tuberosity fracture suggests posterior shoulder dislocation
Prox humerus fracture.jpeg

Clinical Features

  • Pain, swelling, tenderness about the shoulder
  • Arm is held closely against chest wall
Proximal humerus fracture

Differential Diagnosis

Humerus Fractures

Humeral anatomy

Shoulder and Upper Arm Diagnoses

Traumatic/Acute:

Nontraumatic/Chronic:

Refered pain & non-orthopedic causes:

Diagnosis

  • AP, lateral, and axillary radiographs
  • Fracture of articular surface suggested by pseudosubluxation:
    • Superior joint hematoma pushes humerus down
  • Consider CT for
    • Preop surgical planning
    • Greater tuberosity or humoral head position uncertain
    • Intra-articular comminution

Neer System

  • Proximal humerus is divided into four "parts" based on epiphyseal lines:
    • Articular surface of humeral head
    • Greater tubercle
    • Lesser tubercle
    • Shaft of humerus
  • A "one-part" fracture is one in which fragment is displaced <1cm or not angulated >45deg

Management

Non Operative

  • 85% Non-op, often with following features
    • Minimally displaced
    • Greater tubercle < 5mm displaced
    • Consider in advanced age, poor bone quality, non dominant hand, co-morbid disease, other injuries
  • "One-part" fracture:
  • More than one-part fractures:
    • Ortho consult in the ED

Disposition

See Also

References