Title: Knee dislocation<br/>Author: Brian Corwell<br/><a href='http://umem.org/profiles/faculty/294/'>[Click to email author]</a><hr/><p>
Knee dislocation 2</p>
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Most commonly occur after MVCs but also seen after falls, industrial accidents and sports related trauma.</p>
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Up to 50% of knee dislocations will have spontaneously reduced by time of presentation to the ED.</p>
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Strongly consider a spontaneously reduced knee dislocation in those with a significant mechanism of injury in the setting of multidirectional instability (3 or more ligaments torn).</p>
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A thorough neurovascular examination is a must due to the risk of vascular (34%)(5-79%) and nerve (23%)(16-40%) injuries. There is a must higher incidence of these injuries in high force trauma such as from a MVC. The popliteal artery and common peroneal nerve are at the greatest risk</p>
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Though the absence of distal pulses suggests vascular injury, the presence of pulses cannot be used as evidence of the lack of a vascular injury.</p>
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After reduction, the knee should be immobilized in 15-20° of flexion in a knee immobilizer.</p>