[Fractures of the proximal humerus]

Area of Science:

• Orthopedic surgery
• Traumatology
• Bone fracture classification

Context:

• The Neer four-part classification is widely used for proximal humeral fractures but has limitations.
• Displaced fractures, particularly of the anatomical neck (Group II), have a severe prognosis not reflected in the current grading.
• Four-segment fractures can be ambiguously classified into multiple groups, reducing diagnostic sharpness.

Purpose:

• To propose a simplified classification system for proximal humeral fractures.
• To address the limitations of the Neer classification regarding prognosis and clarity.
• To outline optimal treatment strategies based on fracture characteristics and patient factors.

Summary:

• A simplified classification categorizes fractures into Group A (extra-articular non-displaced), Group B (extra-articular displaced), and Group C (intra-articular impacted/dislocated).
• Treatment preferences include open reduction and internal fixation with tension-band wiring for displaced fractures, avoiding rigid plate fixation due to avascular necrosis risk.
• Prosthetic replacement (Neer II) is indicated for specific complex fractures in elderly patients, while open reduction and internal fixation is preferred for others.

Impact:

• The proposed classification offers improved clarity and diagnostic consistency.
• Refined treatment algorithms, emphasizing tension-band wiring and judicious use of prostheses, aim to mitigate the risk of avascular necrosis and improve fracture healing.
• This approach enhances patient outcomes by tailoring surgical interventions to fracture patterns and patient demographics, particularly in managing complex proximal humeral fractures.