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Background and Aim: Traumatic knee dislocation is an uncommon injury that may be limb threatening. Ligamentus, nerve and vascular Injury are complication of it. Popliteal vessele Injury is important complication. Historically, arteriography has been used routinely in patients with knee dislocations. The goal of this study: is artriography always necessary? Materials and Methods: We conducted an institutional retrospective review of patients admitted at a university trauma center with knee dislocations from Feb. 2006, to feb.2007. Eighteen patients (16 male and 2 female average age, 28 years) had 18 dislocations (10 left and 8 right, 17 posterior and 1 latral). Most patients (n =12) were involved in motor vehicle crashes. Seven patients underwent arteriography. Results: All patients had ligamentus injury (in order to PCL, ACL, LCL). 8 patients had popliteal vessel injury. Physical examination in 9 patients was normal so angiography didn’t do. In other 9 patients physical examination were abnormal, two of them undergo early BK amputation without angiography. Six patients with abnormal angiogram 6 patients undergo vascular surgery. The other one had normal angiography in spite of abnormal physical examination. Conclusion: The common complication in knee dislocation is ligamentous injury otherwise the important is vascular damage, and it seems that routine arteriography is not necessary in patients with a normal PE after reduction of the knee dislocation.

Keywords: Knee dislocation; Trauma; Angiography; Physical examination

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