MRI diagnosis for occult fractures of knee joint

Objective To study the MRI diagnosis for occult fractures of knee joint.Methods 64 patients were X-ray negative, but the local symptoms were existed within 2 weeks after trauma. 15 patients had been performed arthroscopy.Results 89 subtle fractures were found in 64 cases in lateral femoral condyle, tibial anterior and lateral. Posterior cruciate ligament, collateral ligament and meniscus were torn in 20 cases.Conclusion MRI can be sensitive to show occult fractures of knee joint, with the more accuracy, and discover ligaments, tendons and cartilage damage. For those patients suspected occult fracture of knee joint or soft tissue injury, MRI is the preferred method to be chosen.