Abstract:Objective To explore achilles tendon (AT) rupture and its magnetic resonance imaging (MRI) characteristics after operation. Methods A retrospective analysis was performed on the clinical imaging data of 21 patients with AT rupture in the General Hospital of Huainan Oriental Hospital Group from February 2019 to November 2021. All patients underwent the conventional MRI (transverse T1WI, sagittal T1WI, T2WI and STIR and coronal T2WI-STIR) sequence scanning. There were 3 cases scanned on a 1.5T Avanto scanner and 18 cases with Spectra 3.0T MRI. Results Out of 21 cases of AT rupture (19 males and 2 females), complete rupture occurred in 20 cases, and partial rupture was in 1 case. There were 14 cases of right AT rupture and 7 cases of left AT rupture. MRI manifestations of AT rupture showed continuous interruption of tendon bundle in 20 cases, partial interruption in 1 case, retraction and deformation of broken end and wavy shape of broken end in 3 cases, horsetail shape in 10 cases, brush shape in 3 cases and pestle shape in 5 cases. The broken end was edematous and filled with blood, showing high signal on MRI, T2WI and STIR. Coronal STIR showed better morphology of space and edge of AT rupture compared with sagittal STIR. Conclusion MRI can clearly show the morphological structure of achilles tendon and accurately diagnose the location and degree of AT rupture. It can be used as the first choice of imaging examination for AT rupture.