• Michael E Hantes, Vasilios A Raoulis, Nikolaos Doxariotis, Athanasios Drakos, Theofilos Karachalios, and Konstantinos N Malizos.
• The Department of Orthopaedic Surgery, Faculty of Medicine, School of Health Sciences, University of Thessalia, Larissa, Greece. Electronic address: hantesmi@otenet.gr.
• Knee. 2017 Jun 1; 24 (3): 588-593.

BackgroundTo report the incidence of septic arthritis after anterior cruciate ligament (ACL) reconstruction and management of this complication using a specific treatment protocol.MethodsAll primary ACL reconstructions performed in our institution between January 2002 and January 2014 were included in this study. Time to presentation, clinical symptoms, and culture results of all infected patients were analyzed. According to our protocol, an arthroscopic debridement and irrigation of the knee joint was performed immediately after a diagnosis of infection was made. In case of recurrence, knee irrigation with hardware and graft removal and later re-implantation was performed. Patients were evaluated with the Lysholm knee score, International Knee Documentation Committee (IKDC) Form, KT 1000 arthrometer and radiographic evaluation.ResultsPostoperative septic arthritis occurred in seven of 1242 patients (0.56%). After initial arthroscopic debridement, infection recurred in six out of seven cases (85%). Graft and hardware removal was performed in these patients. Graft re-implantation was performed in four patients at an average five months after infection. At the final follow-up (mean 6.3years) all patients had full range of motion, while in patients with graft re-implantation the mean Lysholm score was 92, and the mean IKDC score was 87. Radiographs demonstrated that three patients had normal knees and one patient had a grade one, knee arthritis according to Kellgren-Lawrence classification.ConclusionsManagement of septic arthritis after ACL reconstruction using a specific surgical protocol which includes graft removal in case of infection recurrence with later re-implantation, can provide good and excellent results.Level Of EvidenceLevel IV, case series.Copyright © 2017 Elsevier B.V. All rights reserved.

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