Bone Contusions of the Posterior Lip of the Medial Tibial Plateau (Contrecoup Injury) and Associated Internal Derangements of the Knee at MR Imaging

Abstract

Contusions involving the posterior lip of the medial tibial plateau may result from a contrecoup impaction injury directly following an ACL tear, as the knee reduces. These contusions are almost always associated with a far peripheral meniscal tear or with a meniscocapsular junction injury affecting the posterior horn of the medial meniscus.