• N Darabos, N Gusic, T Vlahovic, A Darabos, I Popovic, and I Vlahovic.
• University Clinic for Traumatology, Clinical Hospital Center "Sisters of Charity", Zagreb, Croatia. Electronic address: darabos.dr@vz.t-com.hr.
• Injury. 2013 Sep 1; 44 Suppl 3: S40-5.

IntroductionKnee dislocation in the polytrauma setting is rare. The optimal method that this injury should be managed remains controversial. We therefore undertook a study to evaluate the incidence and outcomes of knee dislocation in polytrauma patients treated in our institution.Patients And MethodsFrom January 2005 to February 2011, two hundred-seventy five polytrauma patients were managed in our institution. Knee dislocation was present in 14 patients (4%): 4 females, mean age 46 years (range 19-52), mean ISS 24 (range 18-34) and 10 males, mean age 45 years (18-48), mean ISS 28 (range 18-48). Knee dislocation was classified according to the Schenck classification. MRI was used routinely for accurate assessment of the knee lesions. Treatment protocol consisted of initially management with the ATLS guidelines, neurovascular assessment, emergency surgical care simultaneously with reanimation procedures and hospitalization at ICU. Upon full evaluation and stabilization of the patient's physiological status and acquisition of a knee MRI scan, one- to three-stage operative treatment was performed. Decision for one- or more-stage treatment was based on the evaluation of the systemic and local clinical status, injury classification, timing of surgery, and consequences that remained after associated injuries. Clinical outcome was evaluated by IKDC 2000 Subjective knee evaluation, IKDC Clinical Examination Scales and the Tegner-Lysholm scale. A specific accelerated rehabilitation program was completed according to the surgical treatment. The mean follow up was 2 years (range 19-48 months).ResultsPatients had a different type of knee dislocations: five KD II, six KD III, two KD V2 and one KD V3. Clinical results were low in patients that underwent the three-staged protocol, and good and high in one- or two-staged operative treatment respectively at the two year follow up. The difference between the results in three groups of treated patients was visible but not statistically significant.ConclusionThe physiological state of the patient along with the type of knee lesion dictates a timing and type of stage treatment. The best postoperative clinical results are fulfilled with the one-stage treatment and it should be the first choice of knee dislocation therapy. Two-stage treatment should be performed only if the general clinical status of polytrauma injured patient or local knee status does not allow a complete knee reconstructive surgery. Three-stage treatment results with the worst outcome and it should be avoided.Copyright © 2013 Elsevier Ltd. All rights reserved.

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