Assessment Value of CT Post-processing Technique Combined with Magnetic Resonance Imaging for Diagnosing the Type of Ankle Fracture and Incidence of Postoperative Complications

Objective To classify and index the ankle fractures and to evaluate its assessment value in postoperative complications by using CT post- processing technique combined with MRI.Methods 51 patients with ankle fracture admitted to the Second Hospital of Nanchang from January 2011 to June 2013 were selected.The patients were given spiral CT scan and the CT imaging post- processing technique combined with MRI was used to make the Lauge- Hansen classification and indexing of ankle fracture.The joint repair situation was classified by referring to the X- ray evaluation standards of Leeds and the incidence of serious complications like arthritis was forecasted and the results were tracked.Results Of the 51 cases of ankle fractures patients,there were 15 cases of supination- eversion(introve- raion)(SE),9 cases of pronation- eversion(ectropion)(PE),11 cases of supination- adduction(SA),7 cases of pronation- abduction(PA) and 9 cases of pronation- dorsiflexion(PD).38 cases were given surgery treatment,and according to Leeds X- ray real- time evaluation standard,20 were excellent,13 were good and 5 were poor.3 cases had damaged articular cartilage and 2 cases had foreign body in the joint space.The predicted incidence of traumatic arthritis was 26.3%(10 /38).The patients were followed up for 12 to 18 months,and the actual incidence was 13.2%(5 /38).Conclusion CT post- processing technique can give a clear intuitional and stereoscopic view of the shape of ankle fracture,and MRI can show the damage of ligaments and cartilago articularis.Combination of the two methods can make the Lauge- Hansen classification and indexing accurately,which can be helpful to the establishment of clinical treatment programs,and it also plays an important role in assessing the joint repair after operation and forecasting the occurrence of serious complications.