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ORIGINAL ARTICLE
Year : 2012  |  Volume : 46  |  Issue : 6  |  Page : 690-697

A retrospective analysis of loss of reduction in operated supracondylar humerus fractures


Paediatric Orthopaedic Unit, Christian Medical College, Vellore, Tamil Nadu, India

Correspondence Address:
Vrisha Madhuri
Head, Paediatric Orthopaedic Unit, Christian Medical College, Ida Scudder Road, Vellore, Tamil Nadu - 632004
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5413.104219

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Background: Loss of reduction following closed or open reduction of displaced supracondylar fractures of the humerus in children varies widely and is considered dependent on stability of the fracture pattern, Gartland type, number and configuration of pins for fixation, technical errors, adequacy of initial reduction, and timing of the surgery. This study was aimed to evaluate the factors responsible for failure of reduction in operated pediatric supracondylar fracture humerus. Materials and Methods: We retrospectively assessed loss of reduction by evaluating changes in Baumann's angle, change in lateral rotation percentage, and anterior humeral line in 77 consecutive children who were treated with multiple Kirschner wire fixation and were available for followup. The intraoperative radiographs were compared with those taken immediately after surgery and 3 weeks postoperatively. Multivariate logistic regression analysis was performed by STATA 10. Results: Reduction was lost in 18.2% of the patients. Technical errors were significantly higher in those who lost reduction (P = 0.001; Odds Ratio: 57.63). Lateral pins had a significantly higher risk of losing reduction than cross pins (P = 0.029; Odds Ratio: 7.73). Other factors including stability of fracture configuration were not significantly different in the two groups. Conclusions: The stability of fracture fixation in supracondylar fractures in children is dependent on a technically good pinning. Cross pinning provides a more stable fixation than lateral entry pins. Fracture pattern and accuracy of reduction were not important factors in determining the stability of fixation.


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