CT and MRI diagnosis of Osgood-Schlatter disease / 实用放射学杂志

ABSTRACT

Objective To characterize the CT and MRI features of Osgood-Schlatter disease (OSD),and explore the feasibility of staging OSD by using CT and MRI.Methods The imaging data of the 27 cases with OSD were retrospectively analyzed,and fea-tures of MRI and CT were characterized.Results All 27 cases with OSD were featured with different extent of edema within the pa-tellar tendon.The portion already exhibited edema in the secondary ossification center in 5 cases,which showed high signal intensity on the T2 WI.There were 1 5 cases which exhibited ossified or tears in the secondary ossification center,and 5 of them were featured with opened shell-like separation on sagittal radiograph.Seven cases had isolated solitary ossicles located at the lower part of the pa-tellar ligament,which is also thickening.Among the 7 cases,one showed hypertrophy in the tibial tuberosity.Three cases examined with CT scan,exhibited ossified nodules located at the lower part of the patellar ligament.Conclusion OSD has characteristic CT and MRI features,and MRI scan is an important imaging method to show edema and morphological changes of patellar tendon in OSD,which could help to identify the stage of OSD and predict the prognosis.