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The risk of concomitant injuries of the contralateral side in valgus injured knee by lateral bumper impact – “Windswept injury mechanism”-

Injury May 09, 2020

Sim JA, Na YG, Lee DW, et al. - Blows to the inside of the knee can result from valgus injury of high energy of the lateral bumper impact, causing the knee to push outwards or indirect injury involving the application of a varus force to the contralateral knee, which injury pattern named as “ Windswept injury mechanism” in this study. Researchers here aimed at establishing injury pattern in the contralateral side knee on the basis of this pattern identification to improve a diagnosis of interrelated osseous and soft-tissue injuries. From Jan 2007 to Dec 2016, they identified 16 patients by “ Windswept injury mechanism”, who visited a level 1 trauma center. By the “ Windswept injury mechanism”, they observed MCL total rupture in all primary knees, and coincidence of the major ligament injuries on the contralateral knee, in addition. All cases had rupture of either ACL or PCL in primary knee. They identified significantly higher risk of ACL injury in the contralateral knee when coincided ACL and MCL injury in primary knee. Overall, it was concluded that an improved diagnosis of potentially subtle and easily missed knee injuries is afforded by the particular mechanism-based injury pattern of “Windswept injury mechanism”, which represented the first to reveal the mechanism that demonstrated concomitant major ligament injuries in the contralateral knee and to develop validated the higher risk of ACL injury in the contralateral knee when integrated ACL and MCL injuries in primary knee.

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