Intra-articular Distal Humerus Fractures: Parallel Versus Orthogonal Plating

Area of Science:

• Orthopedic surgery
• Trauma care
• Biomechanics of bone fixation

Background:

• Dual-plating osteosynthesis is standard for Orthopedic Trauma Association (OTA)-type 13-C distal humerus fractures.
• Optimal plate positioning in dual-plating remains a subject of debate.
• Intra-articular distal humerus fractures require precise surgical management.

Purpose of the Study:

• To evaluate dual-plate positioning in intra-articular distal humerus fracture repair.
• To compare clinical outcomes between parallel and orthogonal plating techniques.
• To assess complications associated with different dual-plating configurations.

Main Methods:

• Retrospective review of 69 patients with OTA-type 13-C distal humerus fractures treated operatively over 10 years.
• Comparison of outcomes between parallel (n=24) and orthogonal (n=45) dual plating groups.
• Statistical analysis using t-tests, Mann-Whitney U, chi-square, and Fisher's exact tests.

Main Results:

• No significant differences in time to union between parallel and orthogonal plating groups.
• Elbow range of motion and Mayo Elbow Performance Index (MEPI) scores were similar at final follow-up.
• No significant differences in complication rates were observed between the two plating techniques.

Conclusions:

• Parallel and orthogonal dual plating techniques yield similar clinical outcomes for intra-articular distal humerus fractures.
• Modern contoured locking compression plates allow for comparable results regardless of plate orientation.
• Both parallel and orthogonal plating are viable options for treating these complex fractures.