The diagnoses of MRI imaging in simplex cartilage fracture of the knee joint
Objective To investigate the value of MR imaging in simplex cartilage fracture of the knee joint, as well as in evaluation of clinical significance Methods. The MR imaging of cartilage fracture were analysed retrospectively in 15 patients with acute cartilage fracture confirmed by arthroscopy. And every manifestation on MRI and that of arthroscopy and operation was compared. Results 19 sites of 15 patients include 6 femoral trochlea, 5 femoral lateral condyle, 3 femoral medial condyle, 3 patella and 2 tibial plateau. Simplex cartilage fracture generally show different degrees of cartilage attenuation, nonuniformity signal, and subcartilage low signal lines were normal; bone bruise was detected in 16 patients; hydrops articuli were detected in 19 patients. Conclusion Simplex cartilage fracture patients customarily have the history of traumatism, common in femoral trochlea, different degrees of cartilage attenuation, nonuniformity signal and bone bruise with typicalimplex cartilage fracture MRI characteristic; local hydrops articuli, without ligament or meniscus trauma, commonly lead to cartilage fracture.