Abstract:

BACKGROUND: Ankle joint fracture is a common fracture in the clinic. Proportion of Danis-Weber B fracture was large. Anatomic reduction and suitable internal fixator of lateral malleolus are the key for successful repair. 
OBJECTIVE: To analyze the anatomic reduction effect of anatomic plate combined with hollow screw fixation for inner and outer side fracture of the ankle joint. 
METHODS: A total of 32 patients with Danis-Weber B ankle fracture, who were treated from March 2010 to October 2013, were retrospectively analyzed. Plate and screw were used for internal fixation of lateral malleolus. Double thread compression screw was used for fixation of medial malleolus. American Orthopaedic Foot and Ankle Society (AOFAS) Ankle Hindfoot Scale and Kofoed Ankle Rating scale were utilized to assess ankle function. Visual Analogue Scale was applied to evaluate the improvement in the degree of pain after repair. Radiographic analysis was conducted within a fixed position on the line for biomechanical level after internal fixation.
RESULTS AND CONCLUSION: All patients were followed up for 6-24 months. All cases had bony union.  AOFAS score, Kofoed score and visual analogue scale were significantly better at 6 months post-treatment than pre-treatment (P < 0.05). Radiographic results revealed good alignment and contraposition following internal fixation. Only one patient suffered from infection, and others did not have any adverse reactions. These results indicate that anatomic plate and hollow screw fixation for the treatment of the medial malleolus and lateral malleolus fractures of ankle joint can exert their characteristics and biomechanical advantage, so fracture reached anatomical reduction of the ankle. 

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Ankle Joint, Internal Fixators, Bone Nails, Biomechanics