Abstract: Objective   To explore the morphological characteristics of Lisfranc ligament and its anatomical relationship with adjacent bones based on MRI, so as to provide imaging reference for the diagnosis and treatment of Lisfranc ligament injury.    Methods    The MRI imaging data of 232 outpatients and inpatients in the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University were retrospectively analyzed, and the morphological data of Lisfranc ligament was measured, including the width and length, distance from the ending point of Lisfranc ligament to lateral margin of the second metatarsal bone, distance from origin of Lisfranc ligament to the medial margin of cuneiform bone, angles between the ligament and the central axis of the first metatarsal bone, the central axis of medial cuneiform bone, and the central axis of the second metatarsal bone.   Results   The average width and length of Lisfranc ligament were (5.67±1.47) mm and (9.61±2.81) mm, respectively. The distance from the ending ponit of ligament to the lateral margin of the second metatarsal bone was (11.69±2.63)mm. The distance from the origin of ligament to the medial margin of cuneiform bone was (18.83±3.39) mm. The average angles between ligament and the central axis of the first metatarsal, central axis of the medial cuneiform bone, central axis of the second metatarsal bone were (51.75±11.01 )°, (38.93 ±11.40)°, (33.93 ±10.17) °, respectively.   Conclusions   In this study, the detailed MRI anatomical data of Lisfranc ligament and its anatomical relationship with adjacent bones were obtained, which can provide certain reference for MRI diagnosis, clinical diagnosis and surgical repair of  ligament injury, and avoid Lisfranc ligament injury caused by blind internal fixation.

Key words: Lisfranc ligament,  ,  , MRI,  ,  , Morphology