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Fall on the flexed knee with the foot in plantarflexion
69%
1563/2261
Fall on the flexed knee with the foot in dorsiflexion
16%
355/2261
Non-contact twist causing knee external rotation and valgus
4%
87/2261
Non-contact twist causing knee internal rotation and varus
6%
142/2261
Direct contact blow to the posterior knee
95/2261
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Overall the most common mechanism of PCL injury is a direct blow to the proximal aspect of the tibia. The most common mechanism of PCL injury in athletes is a fall onto the flexed knee with the foot in plantarflexion, which places a posterior force on the tibia and leads to rupture of the PCL. Schulz et al. retrospectively analyzed 494 patient with PCL injuries. Traffic accidents (45%) and athletic injuries (40%) were the most common causes. The most common injury mechanisms were dashboard injuries (35%) and falls on the flexed knee with the foot in plantarflexion (24%). Multiligament injuries involving the PCL occurred in 64% of patients injured in traffic accidents vs. 48% of those with athletic injuries (p<0.0001). Janousek found similar results showing that MVA was more likely to result in multi-ligament injuries, while a fall on the knee with the foot plantarflexed is most likely to result in an isolated PCL injury in athletic activities.
3.6
(18)
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