Gartland type III extension supracondylar humerus fracture in a 10-year-old child. A surgical case report of an infrequent technique of medial and lateral column stabilization

Introduction and importance: Supracondylar humeral fractures in children are the most common fractures of the elbow accounting for 16 % of all pediatric fractures. The treatment depends on age, the degree of displacement, and the presence of additional injuries. Presentation of case: A case reports a 10-year-old girl with a Gartland type III supracondylar humeral fracture accompanied by anterior interosseous nerve neurapraxia preoperatively. The patient was treated operatively with medial and lateral column cross-pinning using four K-wires due to unsatisfactory closed reduction and lateral pinning only. Follow-up examinations performed in 1 and 6 months postoperatively revealed a 10 degrees flexion contracture of the elbow with good functional and radiological results otherwise. Clinical discussion: The main intervention was not focused on the AIN neuropraxia itself but on unsatisfactory closed reduction followed by cross-fixation with lateral pinning only. A standard anterior approach to visualize the fracture line, free interposing tissues, and perform stabilization was utilized. The unusual use of an additional medial pin formed a cross-frame to adequately support the medial cortex. Conclusion: Closed reduction and percutaneous pinning are the preferred treatment options for most displaced supracondylar fractures. The open reduction via anterior approach and pinning for Gartland type III fracture gives good outcomes. Medial pinning is mandatory in particular fracture patterns and in case of unsatisfactory closed reduction. In the presented case medial and lateral column cross-pinning technique using four K-wires guaranteed no subsequent displacement on follow-up assessment and good results.