Morphologic variations of the fibular malleolar groove and fibrocartilaginous ridge injury on MRI with and without recurrent peroneal tendon dislocation / 中华骨科杂志

ABSTRACT

Objective To compare the morphological variation of the fibular malleolar groove and fibrocartilaginous ridge injury in those with and without peroneal tendon dislocation using MRI.Methods Data of 45 patients (40 males,5 females;average age 23.4±7.7 years,11-44 years) with recurrent peroneal tendon dislocation treated from April 2010 to July 2017 and 45 patients (33 males,12 females;average age 41.6± 11.8 years,17-67 years)without dislocation treated from June 2015 to September 2017 were retrospectively analyzed.The morphological variation of the fibular malleolar groove and fibrocartilaginous ridge injury were compared between the two groups according to Rosenberg's classification (convex,the posterior cortex of the fibula bulges outward;concave,the posterior fibular surface has a shallow-to-deep depression;fiat,neither concavity nor convexity is found).Results In group of patients with recurrent peroneal tendon dislocationconcave,10 patients (22.2％,10/45);fiat,27 patients (60.0％,27/45);convex,8 patients (17.8％,8/45);fibrocartilaginous ridge injury,44 patients (97.8％,44/45).In group of patients without peroneal tendon dislocationconcave,16 patients (35.6％,16/45);flat,18 patients (40.0％,18/45);convex,11 patients (24.4％,11/45);fibrocartilaginous ridge injury,13 patients (28.9％,13/45).Conclusion According the results,significant difference has not been found in morphologic variations of the fibular malleolar groove between patients with and without recurrent peroneal tendon dislocation.Fibrocartilaginous ridge injury is common in MRI of patients with recurrent peroneal tendon dislocation.