Abstract

• PURPOSE: This study was performed to evaluate the results of femoral neck fractures in adult treated with cannulated screws and the factors that may affect results. MATERIALS AND METHODS: From April 1992 to December 1998, the authors analysed 53 cases of femoral neck fracture treated with cannulated screws and followed more than one year. According to Garden's classification and anatomic location, we classified the fracture type. We used Garden alignment index for the accuracy of reduction and Singh index for the degree of osteoporosis. The clinical results were analysed by Lunceford's assessment. RESULTS: According to Lunceford's assessment, the results were good or excellent in 40 cases(75%). Mean bony union time was 16.3 weeks. There were 10 cases(19%) of avascular necrosis of the femoral head, 6 cases(11%) of nonunion and 2 cases(4%) of malunion. There were significant relationship between complication rate and accuracy of reduction(P<0.01), operative delay more than 7 days(P<0.05). CONCLUSION: The important factors that may affect the results are accuracy of reduction and interval between injury and time of operation, the others were degree of displacement, anatomic site, degree of osteoporosis. The results of this study indicate that cannulated screw fixation is an effective method for femoral neck fractures in adult.
• Key words: Femur, neck fracture, cannulated screw

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