Classification and pathoanatomy of posterior malleolus fracture based on posterior malleolus-associated ligaments and ankle stability

The clinical significance of previous posterior malleolus fracture classifications is limited because they are mainly based on fracture morphology. On the basis of posterior malleolus-associated ligaments and ankle stability, injury mechanism, and fracture morphology, a novel posterior malleolus fracture classification system in our study was proposed. The classification promoted better elucidation of the pathoanatomy of posterior malleolus fracture and guidance for clinical diagnosis and treatment.