Adequacy of treatment, bone remodelling and clinical outcome in pediatric supracondylar humeral fractures

The aim of this study was to evaluate and compare, both clinically and roentgenographically, 62 extension-type supracondylar fractures on the basis of the synthesis method and severity of the fracture, with a mean follow-up of 4 years and 3 months. Range of motion, axial alignment of the elbow, muscle strength, and joint stability were estimated and the Mayo Elbow Performance Index and the Pediatric Orthopaedic Society of North America Pediatric Outcomes Data Collection Instrument questionnaire were used. Furthermore, we took radiographic measurements (Baumann's angle, humero-capitellar angle, and lateral rotational percentage). According to Flynn criteria, the clinical outcome of all our patients was satisfactory. According to the results of the questionnaires, no patients has reported any disabling limitation of the elbow function. Radiographic study proved a greater capacity of remodeling in the sagittal plane compared with the frontal one, irrespective of severity of fracture assessed by the Gartland classification. Statistical analysis stressed the validity of postoperative Baumann's angle as a predictor of final carrying angle. With regard to the synthesis method, the best way to approach Gartland II fractures proved to be by closed reduction and percutaneous pinning; the use of a third Kirschner wire in the treatment of Gartland III fractures did not lead to a better result. To conclude, remodeling positively influenced the clinical outcome, however, irrespective of synthesis method and severity of the fracture, we should pay more attention to the adequacy of reduction in frontal plane than in the sagittal one, for which a greater capacity of remodeling was proved.