Treatment of the ankle fracture depends on careful recognition of the range of bone injuries and damage to the soft tissue and ligaments. Ankle fracture is one of the commonest injuries treated by orthopedic surgeons, accounting for 9% of all fractures and 36% of all lower extremity fractures in the United States, and the rate is still increasing particular among elder citizens because of ageing-associated increases in fragility fractures 7, 8. Ankle fracture is a common injury with recent studies demonstrating an annual incidence of 120ā150 fractures per 100,000 persons 6. The unique pattern of anatomy of the ankle and the functional relationship with the foot make the ankle highly susceptible to injuries 1, 2, 3, 4, 5. In conclusion, young and middle-aged men and older women have a higher incidence of ankle fractures, and use of the Lauge-Hansen and Danis-Weber classification systems can better help assessing the varied and complex ankle fractures, predicting the injuries, increasing diagnostic precision and decreasing misdiagnosis rate. Posterior malleolar fractures, fibular fractures above the inferior tibiofibular joint and Tillaux fractures were easily missed in the diagnosis, with 38 fractures (0.96%) being missed in the diagnosis. Male patients between 16 and 50 years of age and women over 50 years had a higher incidence of ankle fractures accounting for 38.4% (1517/3952) and 22.2% (800/3952), respectively. There were 1949 fractures on the left side and 2003 on the right with no significant difference (Pā>ā0.05). Among 3952 patients with ankle fractures, 1225 fractures (31%) were Danis-Weber type A, 1640 (42%) were type B, 751 (19%) were type C, and 336 (9%) were perpendicular compression fracture. Between January 2013 and December 2017, all Chinese patients older than 16 years of age with ankle fractures excluding old ankle fractures and pathological fractures in a tertiary care hospital were analyzed by using the Danis-Weber and Lauge-Hansen classification systems. This study was to analyze ankle fractures for determining the epidemiology, types, distribution, possible mechanisms and diagnosis precision.
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