Summary
Tug lesion, also known as avulsive cortical irregularity is an overuse injury that occurs in the knees of children. It can be mistaken for a tumor.
Complete Information on this Tumor
This overuse injury occurs when a child is intensely active, in running sports or basketball or similar sports, and the medial head of the gastrocnemius muscle, which attaches along with distal medial portion of the femur just above the femoral growth plate, as a result of repetitive forceful muscle traction at the muscle-bone junction, causes a reactive process in the surface of the femur which can be apparent on x-rays.
Patients present with knee pain and a bone lesion. One or both sides may be symptomatic.