Proximal Tibia Physeal Fracture with Entrapped Medial Collateral Ligament Tear: A Report of 2 Cases and Review of Literature

Knee injuries are common in young athletes, with the Medial Collateral Ligament (MCL) being the most frequently injured structure. Proximal tibia physeal fractures, on the other hand, are relatively uncommon, comprising less than 1% of all physeal fractures in the skeletally immature [1]. There are few reports discussing soft tissue interposition in physeal fractures about the knee. We present 2 cases of MCL entrapment within a displaced Salter Harris 1 proximal tibia fracture, both of which were treated surgically. One patient subsequently developed a premature physeal closure with an associated leg length discrepancy. We believe these cases should heighten clinician awareness of this injury pattern and emphasize the importance of advanced imaging in the evaluation of skeletally immature patients with significant medial sided knee injuries.