• Karin Veronica Kollnberger, Fernando Brandão de Andrade E Silva, Marcelo Tadeu Caiero, Marcos de Camargo Leonhardt, Paulo Roberto Dos Reis, Dos Santos SilvaJorgeJInstituto de Ortopedia e Traumatologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil. Electronic address: jorge.ssilva@hc.fm.usp.br., and Kodi Edson Kojima.
• Instituto de Ortopedia e Traumatologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil. Electronic address: karinkolln@gmail.com.
• Injury. 2021 Jul 1; 52 Suppl 3: S33-S37.

IntroductionForearm shaft fracture is common in young adult patients and associated with soft tissue and organ injuries. In open fractures in polytrauma patients, damage control orthopaedics (DCO) is well indicated. The aim of this study is to describe intramedullary Steinmann pin fixation of the ulna as a DCO procedure for the forearm and present a case series.Description Of The TechniqueA 3.0 mm Steinmann pin is inserted retrograde in the ulna proximal fragment through the fracture site using the open wound as the approach. With direct visualization of the reduction, the pin is advanced into the distal fragment. The reduction of the longitudinal axis and shortening is thus achieved.Patients And MethodsThis method was used for all open fractures of forearm both-bone fractures in polytrauma patients undergoing DCO from 2014 to 2019. The alignment and length of the ulna were evaluated radiographically after pin fixation and before and after definitive fixation. Differences in the need for secondary procedures and infection rate between DCO and definitive fixation were also evaluated.ResultsThere were 30 males (85.7%) with an average age of 32.9 ± 12.0 years and a mean ISS (Injury Severity Score) of 29.4 (range, 18.0-41.0). The most common associated injuries were thoracic trauma (62.8%) and head trauma (45.7%). In the radius and ulna, 51.4% and 60.0% of fractures, respectively, were multifragmentary (types B and C). Gustilo type IIIA represented 77.1% of the injuries. Pin fixation achieved good alignment and length in all cases. The mean time between DCO and definitive fixation was 12.0 days, and no secondary procedure was needed, nor any case developed either superficial or deep infection. The conversion from DCO to definitive fixation was considered easy in all cases.ConclusionIntramedullary Steinmann pin fixation of the ulna is a viable option for DCO for forearm both-bone fractures in open fractures in polytrauma patients.Copyright © 2021. Published by Elsevier Ltd.

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