Distal humerus shear-fractures: "Built-on" surgical technique.

Area of Science:

• Orthopedic Surgery
• Traumatology
• Skeletal Reconstruction

Background:

• Distal humeral shear fractures with lateral column comminution pose challenges for articular fragment reconstruction.
• Existing techniques may be limited when significant comminution compromises the lateral column's integrity.

Observation:

• Comminution of the lateral column in distal humeral shear fractures can impede the precise reconstruction of lateral articular fragments.
• A new surgical strategy, the "built-on" technique, is introduced to manage these complex fractures.

Findings:

• The "built-on" technique achieves three primary goals: restoring lateral column bone stock, providing a robust scaffold for lateral ulnar collateral ligament (LUCL) repair, and establishing a stable platform for articular fragment reconstruction and fixation.
• Key surgical steps include reconstruction of the lateral trochlea, lateral column, fixation of the capitellum, and LUCL reconstruction.

Implications:

• This technique offers a viable solution for complex distal humeral shear fractures, potentially improving outcomes for patients with comminuted lateral columns.
• The described method enhances the ability to reconstruct the lateral column, stabilize the elbow joint, and restore articular congruity.