It Is Always the Same-A Complication Classification following Angular Stable Plating of Proximal Humeral Fractures

Area of Science:

• Orthopedic Surgery
• Trauma Surgery
• Biomedical Engineering

Background:

• Osteosynthesis-related complications impact proximal humerus fracture treatment.
• Angular stable plating is a common surgical technique for these fractures.
• A standardized classification is needed to correlate complications with outcomes.

Purpose of the Study:

• To develop a novel classification system for complications following angular stable plating of proximal humerus fractures.
• To assess the influence of these complications on clinical outcomes.
• To relate complication types to fracture morphology and inform revision strategies.

Main Methods:

• Retrospective analysis of 1047 proximal humerus fractures treated with angular stable plating.
• Inclusion of 193 cases with osteosynthesis-associated complications.
• Development and application of a new complication classification system (Types 1-4).

Main Results:

• A 24.5% complication rate was observed.
• Complication Types 2 (displacement with/without cutout), 3 (plate/shaft cutout), and 4 (avascular necrosis) significantly impacted clinical outcomes (Constant Score).
• More complex fracture patterns were associated with a higher incidence of complications.

Conclusions:

• The proposed classification system effectively categorizes proximal humerus fracture complications.
• Specific complication types correlate with diminished clinical results, necessitating tailored revision strategies.
• Fracture complexity is a key factor in complication development.