TIBIAL INTERCONDYLAR EMINENCE FRACTURE
Fracture of the intercondylar eminence (tibial spine) indicates partial or complete detachment of the ACL from the tibia and is most commonly found in children. This fracture is usually caused by hyperextension of the knee or a sudden twisting motion. Forceful traction resulting from a direct blow to the distal femur on a flexed knee may also result in this fracture. If the fracture is displaced, the loose fragment may block motion and cause severe swelling and hemarthrosis. Type I fracture of the tibial spine is an incomplete fracture, whereas type II is complete but nondisplaced. Type III fractures are described as type IIIA (complete and displaced) and type IIIB (complete, displaced, and rotated out of position).